{"id":273370,"date":"2026-09-15T03:01:00","date_gmt":"2026-09-15T08:01:00","guid":{"rendered":"https:\/\/langcom.org\/?p=273370"},"modified":"2026-09-15T03:01:00","modified_gmt":"2026-09-15T08:01:00","slug":"zero-first-conditional-b1-b1","status":"publish","type":"post","link":"https:\/\/langcom.org\/it\/blog\/zero-first-conditional-b1-b1\/","title":{"rendered":"Mastering Conditionals: Zero and First Conditional (B1 English Grammar)"},"content":{"rendered":"<div class=\"lc-answer\"><strong>The zero conditional describes general truths and scientific facts, showing what always happens under certain conditions. The first conditional, however, talks about real or possible situations and their likely outcomes in the future.<\/strong> Both structures use an &#8216;if&#8217; clause to introduce the condition and a main clause to state the result. The key difference lies in the tense used in the main clause and the certainty of the outcome. For the zero conditional, both clauses use the present simple, indicating a universal truth. For the first conditional, the &#8216;if&#8217; clause uses the present simple, but the main clause uses &#8216;will&#8217; + base verb, pointing to a probable future event. Understanding these differences helps you express certainty and possibility accurately in English.<\/div>\n<h2>What is the Zero Conditional?<\/h2>\n<p>The zero conditional is used to talk about general truths, scientific facts, and things that always happen under certain conditions.<\/p>\n<ul>\n<li>It describes a cause-and-effect relationship that is always true.<\/li>\n<li>The result is certain every time the condition is met.<\/li>\n<\/ul>\n<p>The structure for the zero conditional is simple:<\/p>\n<ul>\n<li><span data-no-translation>If + present simple, present simple<\/span><\/li>\n<\/ul>\n<div class=\"lc-cta lc-cta-blended\" style=\"border-radius:14px;padding:30px;margin:30px 0;text-align:center;color:#fff;background:linear-gradient(135deg,#0E63C4,#0A2540);\"><h3 style=\"color:#fff;font-size:22px;font-weight:800;margin:0 0 8px;\">\ud83c\udf93 Impara l'inglese con il metodo misto<\/h3><p style=\"margin:0 0 10px;opacity:.95;\">Piccoli gruppi \u00b7 Tutor IA disponibile 24 ore su 24, 7 giorni su 7 \u00b7 Preparazione agli esami di Cambridge<\/p><p style=\"margin:0 0 16px;font-size:18px;\">Piani da <strong><span class=\"woocommerce-Price-amount amount\"><bdi><span class=\"woocommerce-Price-currencySymbol\" translate=\"no\" dir=\"auto\">$<\/span>39<\/bdi><\/span><\/strong> <s style=\"opacity:.6;\"><span class=\"woocommerce-Price-amount amount\"><bdi><span class=\"woocommerce-Price-currencySymbol\" translate=\"no\" dir=\"auto\">$<\/span>79<\/bdi><\/span><\/s> al mese<\/p><a href=\"\/it\/\" style=\"display:inline-block;margin-top:8px;padding:13px 30px;border-radius:8px;font-weight:700;text-decoration:none;background:#fff;color:#0E63C4;\">Prenota la tua lezione<\/a><\/div>\n<h2>When Do We Use the Zero Conditional?<\/h2>\n<p>We use the zero conditional for:<\/p>\n<ul>\n<li><strong>General truths:<\/strong> Things that are always true in the world.<\/li>\n<li><strong>Scientific facts:<\/strong> Laws of nature or proven scientific principles.<\/li>\n<li><strong>Habits and routines:<\/strong> What you or others always do in specific situations.<\/li>\n<\/ul>\n<p>You can often replace <span data-no-translation>if<\/span> con <span data-no-translation>when<\/span> in zero conditional sentences without changing the meaning. This is because the result is always the same.<\/p>\n<h2>What is the First Conditional?<\/h2>\n<p>The first conditional is used to talk about real or possible situations in the future and their likely results.<\/p>\n<ul>\n<li>It describes a specific condition and a probable outcome.<\/li>\n<li>The result is not 100% certain, but it is very likely to happen.<\/li>\n<\/ul>\n<p>The structure for the first conditional is:<\/p>\n<ul>\n<li><span data-no-translation>If + present simple, will + base verb<\/span><\/li>\n<\/ul>\n<h2>When Do We Use the First Conditional?<\/h2>\n<p>We use the first conditional for:<\/p>\n<ul>\n<li><strong>Future possibilities:<\/strong> Things that might happen in the future.<\/li>\n<li><strong>Plans and predictions:<\/strong> What we expect to happen if a condition is met.<\/li>\n<li><strong>Warnings and advice:<\/strong> To tell someone what will happen if they do or don't do something.<\/li>\n<\/ul>\n<p>In the first conditional, we usually use <span data-no-translation>if<\/span> because the situation is a possibility, not a certainty. Using <span data-no-translation>when<\/span> here would imply the condition is definite.<\/p>\n<h2>If vs. When: A Closer Look<\/h2>\n<p>Entrambi <span data-no-translation>if<\/span> e <span data-no-translation>when<\/span> can introduce conditional clauses, but they have different implications:<\/p>\n<ul>\n<li>Utilizzo <span data-no-translation>if<\/span> for things that are possible or might happen. The condition is not certain.<\/li>\n<li>Utilizzo <span data-no-translation>when<\/span> for things that are certain to happen. The condition is definite.<\/li>\n<\/ul>\n<p>For example, you know the sun will rise tomorrow, so you might say <span data-no-translation>When the sun rises, I will go for a walk.<\/span> But if you're not sure about the weather, you'd say <span data-no-translation>If it rains, I will stay home.<\/span><\/p>\n<table>\n<caption>Zero vs. First Conditional Comparison<\/caption>\n<thead>\n<tr>\n<th>Caratteristica<\/th>\n<th>Zero Conditional<\/th>\n<th>First Conditional<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><span data-no-translation>Use<\/span><\/td>\n<td><span data-no-translation>General truths, scientific facts, habits<\/span><\/td>\n<td><span data-no-translation>Real or possible future situations<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>'If' Clause Form<\/span><\/td>\n<td><span data-no-translation>If + present simple<\/span><\/td>\n<td><span data-no-translation>If + present simple<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>Main Clause Form<\/span><\/td>\n<td><span data-no-translation>present simple<\/span><\/td>\n<td><span data-no-translation>will + base verb<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>Certainty<\/span><\/td>\n<td><span data-no-translation>Always true, 100% certain result<\/span><\/td>\n<td><span data-no-translation>Probable, likely to happen (not 100% certain)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>Example<\/span><\/td>\n<td><span data-no-translation>If you freeze water, it turns to ice.<\/span><\/td>\n<td><span data-no-translation>If it snows, we will build a snowman.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span data-no-translation>'When' usage<\/span><\/td>\n<td>Often interchangeable with <span data-no-translation>if<\/span><\/td>\n<td>Generally not interchangeable with <span data-no-translation>if<\/span> (unless the condition is certain)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Esempi<\/h2>\n<ul>\n<li><span data-no-translation>If you heat water to 100 degrees Celsius, it boils.<\/span> (Zero Conditional - Scientific fact)<\/li>\n<li><span data-no-translation>When I'm tired, I go to bed early.<\/span> (Zero Conditional - General truth\/habit)<\/li>\n<li><span data-no-translation>If you mix blue and yellow, you get green.<\/span> (Zero Conditional - General truth)<\/li>\n<li><span data-no-translation>If it rains tomorrow, we will stay at home.<\/span> (First Conditional - Future possibility)<\/li>\n<li><span data-no-translation>If she studies hard, she will pass the exam.<\/span> (First Conditional - Probable future outcome)<\/li>\n<li><span data-no-translation>If I find your keys, I will call you immediately.<\/span> (First Conditional - Specific future action)<\/li>\n<\/ul>\n<h2>Esercitazione<\/h2>\n<div class=\"h5p-iframe-wrapper\"><iframe id=\"h5p-iframe-1730\" class=\"h5p-iframe\" data-content-id=\"1730\" style=\"height:1px\" src=\"about:blank\" frameborder=\"0\" scrolling=\"no\" title=\"I09 L2 GRAMMAR Zero and first conditional\"><\/iframe><\/div>\n<div class=\"lc-cta lc-cta-placement\" style=\"border-radius:14px;padding:30px;margin:30px 0;text-align:center;color:#fff;background:linear-gradient(135deg,#2B87DA,#29C4A9);\"><h3 style=\"color:#fff;font-size:22px;font-weight:800;margin:0 0 8px;\">\u270d\ufe0f Non sai a quale livello ti trovi?<\/h3><p style=\"margin:0 0 16px;opacity:.95;\">Fai il nostro test di livello gratuito e ricevi un feedback personalizzato da esaminatori certificati Cambridge.<\/p><a href=\"\/it\/inglese\/accademia\/test-gratuito\/\" style=\"display:inline-block;margin-top:8px;padding:13px 30px;border-radius:8px;font-weight:700;text-decoration:none;background:#0A2540;color:#fff;\">Fai il nostro test di livello GRATUITO<\/a><\/div>\n<h2>Errori comuni per chi parla spagnolo<\/h2>\n<h3>Errori comuni per chi parla spagnolo<\/h3>\n<p>Spanish speakers often make a few common mistakes when using the zero and first conditional:<\/p>\n<ul>\n<li><strong>Using 'will' after 'if' in the first conditional:<\/strong> In Spanish, you might use a future tense in both parts of the conditional. However, in English, the 'if' clause always uses the present simple for the first conditional. <br \/><strong>Errato:<\/strong> <span data-no-translation>If it will rain, I will stay home.<\/span><br \/><strong>Corretto:<\/strong> <span data-no-translation>If it rains, I will stay home.<\/span><\/li>\n<li><strong>Using 'will' in the zero conditional:<\/strong> Remember that the zero conditional is for things that are always true, not future possibilities. Both clauses need the present simple. <br \/><strong>Errato:<\/strong> <span data-no-translation>If you will heat ice, it will melt.<\/span><br \/><strong>Corretto:<\/strong> <span data-no-translation>If you heat ice, it melts.<\/span><\/li>\n<li><strong>Confusing 'if' and 'when':<\/strong> While sometimes interchangeable in the zero conditional, they are not in the first conditional. Use <span data-no-translation>if<\/span> for possibilities and <span data-no-translation>when<\/span> for certainties. <br \/><strong>Errato:<\/strong> <span data-no-translation>When I win the lottery, I will buy a house.<\/span> (Winning is not certain)<br \/><strong>Corretto:<\/strong> <span data-no-translation>If I win the lottery, I will buy a house.<\/span><\/li>\n<\/ul>\n<h2>Domande frequenti<\/h2>\n<h3>What is the main difference between the zero and first conditional?<\/h3>\n<p>The zero conditional describes things that are always true or always happen (<span data-no-translation>If you heat water, it boils.<\/span>). The first conditional describes a real possibility in the future and its likely result (<span data-no-translation>If it rains, we will cancel the picnic.<\/span>).<\/p>\n<h3>Can I use 'when' instead of 'if' in conditional sentences?<\/h3>\n<p>Yes, in the zero conditional, you can often use <span data-no-translation>when<\/span> anzich\u00e9 <span data-no-translation>if<\/span> because the result is always true. For example, <span data-no-translation>When I eat too much, I feel sick.<\/span> However, for the first conditional, use <span data-no-translation>if<\/span> because the situation is a possibility, not a certainty.<\/p>\n<h3>What tenses are used in the zero conditional?<\/h3>\n<p>In the zero conditional, both the 'if' clause and the main clause use the <span data-no-translation>present simple<\/span> tense. For example, <span data-no-translation>If you don't water plants, they die.<\/span><\/p>\n<h3>What tenses are used in the first conditional?<\/h3>\n<p>In the first conditional, the 'if' clause uses the <span data-no-translation>present simple<\/span>, and the main clause uses <span data-no-translation>will + base verb<\/span>. Ad esempio, <span data-no-translation>If I have time, I will help you.<\/span><\/p>\n<h2>Lezioni correlate<\/h2>\n<ul>\n<li><a href=\"https:\/\/langcom.org\/it\/?p=272336\">Conditionals<\/a><\/li>\n<li><a href=\"https:\/\/langcom.org\/it\/?p=272994\">Conditionals<\/a><\/li>\n<li><a href=\"https:\/\/langcom.org\/it\/?p=273189\">Conditionals<\/a><\/li>\n<li><a href=\"https:\/\/langcom.org\/it\/?p=273246\">Conditionals<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>The zero conditional describes general truths and scientific facts, showing what always happens under certain conditions. The first conditional, however, talks about real or possible situations and their likely outcomes in the future. Both structures use an &#8216;if&#8217; clause to introduce the condition and a main clause to state the result. The key difference lies [&hellip;]<\/p>\n","protected":false},"author":192,"featured_media":274416,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"bwfblock_default_font":"","langcom_teaches":"Conditionals","langcom_cefr":"B1","langcom_type":"grammar","langcom_faq":"[{\"q\": \"What is the main difference between the zero and first conditional?\", \"a\": \"The zero conditional describes things that are always true or always happen (<span data-no-translation>If you heat water, it boils.<\/span>). The first conditional describes a real possibility in the future and its likely result (<span data-no-translation>If it rains, we will cancel the picnic.<\/span>).\"}, {\"q\": \"Can I use 'when' instead of 'if' in conditional sentences?\", \"a\": \"Yes, in the zero conditional, you can often use <span data-no-translation>when<\/span> instead of <span data-no-translation>if<\/span> because the result is always true. For example, <span data-no-translation>When I eat too much, I feel sick.<\/span> However, for the first conditional, use <span data-no-translation>if<\/span> because the situation is a possibility, not a certainty.\"}, {\"q\": \"What tenses are used in the zero conditional?\", \"a\": \"In the zero conditional, both the 'if' clause and the main clause use the <span data-no-translation>present simple<\/span> tense. For example, <span data-no-translation>If you don't water plants, they die.<\/span>\"}, {\"q\": \"What tenses are used in the first conditional?\", \"a\": \"In the first conditional, the 'if' clause uses the <span data-no-translation>present simple<\/span>, and the main clause uses <span data-no-translation>will + base verb<\/span>. For example, <span data-no-translation>If I have time, I will help you.<\/span>\"}]","_kiss_seo_title":"","_kiss_seo_excerpt":"The zero conditional describes general truths and scientific facts, showing what always happens under certain conditions.","_mwseo_canonical":"","_mwseo_keywords":"","_mwseo_primary_category":0,"footnotes":""},"categories":[168],"tags":[651,1108],"formats":[],"class_list":["post-273370","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-b1-intermediate-english","tag-grammar","tag-zero-and-first-conditional"],"dsm_author":{"name":"Ra\u00fal","avatar_url":"https:\/\/langcom.org\/wp-content\/uploads\/nsl_avatars\/1de86ea706740d324aaef3dd8bf0843b.png","archive_link":"https:\/\/langcom.org\/it\/blog\/author\/raulmaguinahamann\/","biodata":""},"dsm_categories":[{"term_name":"B1 Intermediate 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