Thepresent perfect continuous tense is formed by using a form of the auxiliary verb "have" along with "been" and the present participle of the "main" verb. especially using the prepositions "for" or "since." Sometimes we can use different adverbials; sometimes we don't have to specify the duration at all. For example:
PresentPerfect-Continuous-2 In our second present perfect continuous lesson plan we examine the use of the tense with for, since and how long to express repeated activities (e.g. she has been taking piano lesson for years). We also provide review of the tense for activities that have just stopped or that are continuing.Thepresent perfect continuous tense (sometimes referred to as the present perfect progressive tense) is a special tense which talks about events in the past that last into the present. It usually emphasizes the duration or amount of time that the action has been taking place. The present perfect continuous uses two auxiliary verbs in combination with a main verb.
Thepast perfect continuous tense is used to describe an action that began and was still in progress in the past before another past action started. Past Perfect Continuous Tense. The meaning is very similar to the present perfect continuous tense in this way. However,
Presentperfect tense talks about experiences from the past, a change and a continuing situation. Example: She has lived in the UK. (experience) I have bought a new television. (change) She has worked here for five years. (continuing situation) Present Perfect Continuous Tense Use present perfect continuous tense to talk about past actions that
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