牛津譯林版高中英語必修二unit 1《tales of the unexplained》（grammar and usage）課件-全文預(yù)覽
【正文】 ith how many/much, and the present perfect continuous tense to ask questions beginning with how long. A state verb or an action verb? 1. I have had this camera for five years. 2. I have taken photos of UFOs with this camera. 3. I have been taking photos of UFOs with this camera. state verb action verb state verb An action means something happening or changing. A state means something staying the same. Some examples of action verbs are do, go, and play. Some examples of state verbs are like, know and exist. Note: We can use either a state verb or an action with the present perfect tense, but we usually can only use an action verb with the present perfect continuous tense. A state verb doesn’t mean an action, so it can’t be used in a continuous tense. . They’ve always had a big garden. How long have you known each other? He’s been in hospital since his accident. I’ve already been to Paris. I’ve never visited Paris. Note: We use the present perfect tense, not the present perfect continuous tense, with the words like always, never, yet, already and ever. How long have you been learning English? How long have you learnt English? It has been raining for a long time. It has rained for a long time. Note: An action which began in the past and is still continuing or has only just finished can, with certain verbs, be expressed by either the present perfect or present perfect continuous. Verbs which can be used in this way include expect, hope, learn, lie, live, sleep, sit, study, wait, want, snow, etc. Make up dialogues with the present perfect tense and the present perfect continuous tense. Two friends are chatting. Read their conversation and circle the right words to plete it. Answers of part A on page 11: (1) ______________ (2) _____________ (3) ______________ (4) _____________ (5) ______________ (6) _____________ (7) ______________ (8) _____________ (9) ______________ (10) ____________ (11) _____________ heard been doing been researching done started achieved read found started be
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