unit1現(xiàn)在完成時(shí)態(tài)(存儲版)
【正文】 I haven’t seen her for 3 years. ? I haven’t seen her since last year. since +時(shí)間點(diǎn) for +時(shí)間段 these days recently so far in the past few years lately by now 延續(xù)性與非延續(xù)性動詞： ? 判斷正誤 ： ? 延續(xù)性動詞常與 for, how long, since 等引導(dǎo)的表示一段時(shí)間的狀語或狀語從句連用。 ? Have you ever seen any aliens by yourself? ? I have never seen any aliens. ? (3) 表示到說話為止的過去時(shí)間狀語 ，如 just，before， up to now， the past few years等。 ? 一般過去時(shí)的時(shí)間狀語： ? yesterday, last week， …ago, in1980, in October, in the past等，皆為具體的時(shí)間狀語。 ? I haven’t seen my mother for two years and I miss her very much. ? 關(guān)于現(xiàn)在完成時(shí)的幾點(diǎn)補(bǔ)充 ： ? （ 1）現(xiàn)在完成時(shí)常與 since連用，表示“自 …… 以來” ,一直進(jìn)行或者未進(jìn)行某項(xiàng)活動，在 since分句中，通常用非持續(xù)性動詞的一般過去時(shí)，主句中的動詞常用現(xiàn)在完成時(shí)，如果主句為表示時(shí)間長度的 it be句型，動詞可用一般現(xiàn)在時(shí)代替現(xiàn)在完成時(shí)。 判斷正誤： （ ） I have received his letter for a month. （ ） I received this letter a month ago. （ ） I haven39。 Tales of the unexplained Unit 1 Grammar and usage 現(xiàn)在完成時(shí)態(tài) ? have /has + 過去分詞 Present perfect tense The structure of the Present Perfect Tense is: subject aux. v main v + I have seen ET. + You have eaten mine. _ She has not been to Rome. _ We have not played football. ? Have you finished It? ? Has he done It? 通常使用現(xiàn)在完成時(shí)的幾種情況： ? 1 表示發(fā)生在過去對現(xiàn)在 仍有影響 的動作。t received his letter for almost
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