puters_Grammar语法课件.ppt

人教课标高一必修 2 Unit 3 The Present Perfect The Present Perfect Passive Voice Passive Voice 现在完成时的被动语态现在完成时的被动语态 1) 现在完成时(have/has + 过去分词) 现在完成时的动作或情况虽然发生在过去,但它强调的是与现在的关系,用来说明现在的情况。现在完成时不能与表示确定的过去时间的状语连用, 如: yesterday, two weeks ago, in 1978, when I got there already, always, often, ever, never, yet, not...yet, just 等不表示明确的时间副词连用, 还可以和表示时间一直延续到目前的带 since, for 的状语及包括现在在内的词连用。如: now, today, this month, this year, recently , these few days 等。不能用在现在完成进行时态的动词, 如: be, have, like, love, know, believe, hate 等。一般过去时则是表示过去某时发生的动作或情况, 与现在毫无关系。 2) 现在完成进行时(have/has + been + 现在分词) 1)一般现在时的被动语态(am/is/are + 过去分词) 如: The work is done during two days. 2) 一般过去时的被动语态(was/were + 过去分词) 如: He was sent to the hospital immediately after the accident. 2. 七种被动语态形式 3) 一般将来时的被动语态(will/shall + be + 过去分词或+ be going to + be + 过去分词) 如: The work will be finished soon. 4) 现在进行时的被动语态(is/am/are + being + 过去分词)如: The bridge is now being constructed . 5) 现在完成时的被动语态(have/has +been + 过去分词) 如: The radio has been repaired when we phoned the shop. 6) 带情态动词的被动语态(情态动词+ be + 过去分词)如: This can be done in a few minutes. 7) 动词不定式的被动式(to be + 过去分词) 如: It is an honor for me to be asked to speak here. 现在完成时的被动语态现在完成时的被动语态现在完成时的被动语态表示动作发生在现在完成时的被动语态表示动作发生在过去过去, , 到现在已经完成或对现在仍有影响到现在已经完成或对现在仍有影响, , 其构成是其构成是: have/has been + done : have/has been + done 。。例如: 1. The dirty clothes have been washed . 脏衣服都已经洗了。 2. The plan has been studied by the experts for three times. 这项计划已经由专家研究过三次了。