The abstract is usually in the past tense due to it showing what has already been studied ... It can be beneficial to use passive when one wants to keep a similar subject in a series of sentences ...

In this sentence, the subject is Matt ... In English we have many different verb tenses, but the most common one you will use besides the present tense will be the past tense. Normally in the past ...

Learn how to form sentences using the present tense. Key verbs - auxiliaries, avoir and être, and modal verbs Find out how to use key verbs for different tenses. Common verb forms used in French ...

1. The voice of the verb is distinct from its tense. Don't confuse the passive voice with the past tense. (Sentence 2 happens to be in the past tense, but 3 is not; both 2 and 3 are in the passive ...