الخطوة 1اختر الخيار الصحيح
الخطوة 2أضف التدريبات التي تعجبك إلى المفضلة
If the verb in the main clause is in the future, the verb in the time clause must be in the present tense
If we are speaking of an action just finished, we must use the present perfect instead of the simple past tense. For example, immediately after the clock strikes, we shouldn't say The clock struck, but The clock has struck.
Express a counterfactual (that didn't happen) condition by the past perfect and use the past conditional in the main clause. This use of the past perfect doesn't indicate a time but an impossible happening.
As a rule, verbs denoting a state rather than an act have no continuous forms, like understand, know, believe, like, love, belong, prefer, consist, mean, hear, see, etc.
After the auxiliary does use the infinitive without to, and not the third person of the present.
The answer to a question beginning with Does is always in the present tense, third person: Does he like the cinema? - Yes, he likes the cinema; or Yes, he does.