1 Answer. Both in the last week and in the past indicate a period of time leading up to now. So they're not referring to a past time and are compatible with the present perfect. Specifically, the former means "in the last seven days leading up to now". One the other hand, last week would refer to a past time and be incompatible with the present For and since are commonly used with the present perfect tense. For. We use for to talk about a period of time. E.g. "I haven't smoked for weeks." Since. We use since to talk about a specific point in time, or a time when the action started. E.g. "I haven't smoked since 2010." The affirmative form of the Present Perfect Tense is used to express an action or event that has occurred at an unspecified time in the past or that began in the past and continues to the present. The structure of the affirmative form is as follows: Subject + have/has + past participle of the verb. Examples:
Already / Just / Yet. Fill in the blanks with the most appropriate perfect tense time expressions; ever, never, just, already, yet, so far, recently, since, for 1. I have seen such a mesmerizing place like this before. 2. I know Italy, I have been there before. 3. You have missed him, he was here a minute ago. 4.

Just = Immediately. Just can also be used as a time expression to mean that something important will happen immediately. In this case, use the present continuous tense or 'going to' to express that something is about to happen. He's just getting ready to go now. I'm just going to finish this and then we can go.

In the present simple 3rd person singular (he, she, it), add s, es, or ies to the base form of the verb. To regular verbs just add an s - Ex: travel >travel s, give > give s, play >play s. To verbs that end in s, ss, sh, ch, x, and o, add an es - Ex: wash > wash es, mix > mix es, go >go es. To verbs end in y after a consonant (any letter that
Tip 1: Be careful of irregular verbs in the present perfect. With irregular verbs, the simple past and the past participle form are usually different. INCORRECT: I have already did it. CORRECT: I
Name Time Expressions. Example. Usually, Always, Often, occasionally, rarely, Never, etc. They sometimes play golf with together. She never smokes. Every day/ week/ year, etc. She travels to Viet Nam every year. He tries to exercise every day. Once/ Twice/ Three time, etc.
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    • present perfect tense time expressions examples