Zero conditional: talks about something which is always true or is the result of something else, if + present simple in one clause; present simple in the next clause, Can be used with present continuous or present perfect in other clause, "If you intend to improve your English, you need to attend a course at Bayswater." ;), "If companies aren't following environmental regulations, rivers get polluted and water sources become contaminated.", "If a student hasn't written an essay before they are an adult, it is hard for them to formulate strong arguments.", First conditional: "If the storm still hasn't ended in 2 hours' time, we won't be able to take off.", talks about something that will happen in the future as a result of something else., "If you're planning to visit us this year, make sure it is before summer.", "I'll have the report completed by 6pm if I receive the figures before 4pm.", If + present tense in one clause; future tense in other clause, Can use any present form in if clause; and future form OR imperative in other clause.,

Zero and first conditionals

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