2 Answers. These sentences are both entirely acceptable. However, neither contains a present perfect: in both the have + PastParticiple is not a 'true' perfect construction but a 'past marker' required by the peculiarities of modal verbs. This is tricky. Let's start with a modal 'true' present perfect: A. John may have finished the report already. How to Form the Present Simple Tense. It’s very simple. To form a positive sentence, it’s necessary to use a verb without the word “to,” and add the ending -s/es for third person singular (he, she, it). The verb goes after the subject (the person doing the action). Look at some examples: I drive to work every day. Time Expressions of Present Perfect Tense Level: elementary Age: 13-17 Downloads: 55 : Present Perfect Tense Time Expressions Level: intermediate Age: 7-15 Downloads We use the present perfect continuous tense to talk about: actions and states that began in the past and are still continuing at the time of speaking. I have been holding this ladder for ages. The present perfect tense is a verb tense used to describe actions or events that have occurred at an unspecified time in the past or that began in the past and continue into the present. It is formed by using the auxiliary verb “have” (or “has” for third-person singular subjects) followed by the past participle of the main verb. The present perfect tense is used to talk about a past experience or action that has a connection to the present. It is also used to describe an action that started in the past and continues up to the present time, without specifying when it ended. The present perfect tense is often used with time expressions such as “already,” “yet We can use the present perfect positive with just or already: Subject + have/has + just/already + past participle. three universities. the match. We usually use short forms ( I've, You've, He's, etc.) when we are speaking and in informal writing. Subject + haven't/hasn't + past participle + yet. yet. The present perfect is a relational tense. We use it to consider one state, event or action in relation to another. Fundamentally, the tense is a present tense, not a past tense, because it refers to the present in relation to the past. Another way of putting that is that it refers to the past within the present. in ten minutes' time: en una hora: in an hour's time: en una semana: in a week’s time: en diez días: in ten days’ time : en tres semanas: in three weeks’ time: en dos meses: in two months’ time: en diez años: in ten years’ time Modal verbs show possibility, intent, ability, or necessity. Common examples of modal verbs include can, should, and must . Because they’re a type of auxiliary verb (helper verb), they’re used alongside the infinitive form of the main verb of a sentence. Modal verbs are used to express certain hypothetical conditions, such as advisability N9wrU.