高一英語上冊必修四知識點(編輯修改稿)
2024-12-07 02:26 本頁面
【文章內容簡介】 t to do 。二、過去進行時①過去某一時刻正在進行的動作或某一階段內發(fā)生或頻繁發(fā)生。②某一動作發(fā)生時另一動作正在發(fā)生，其中一個在由when或while引導的時間狀語從句中。三、 現(xiàn)在完成時①現(xiàn)在完成時除可以和for、since引導的狀語連用外，還可以和下面的介詞短語連用：during / in /over the last(past)few years (months, weeks)、in recent years等。②下列句型中常用現(xiàn)在完成時It is (has been) + 一段時間 + since從句This(That / It)is the first(second…)time that + 完成時This(That / It)is the only … + that + 完成時This(that / It)is the best / finest / most interesting … + that 從句 + 完成時③在時間或條件狀語從句中，現(xiàn)在完成時可以代替一般將來時。如：I shall post the letter as soon as I have written it.If you have done the experiment, you will realize the theory better.Don’t get off the bus until it has stopped.survey n. 調查，概述。v. 測量，檢查。. a. A recent survey showed most of those questioned were for the
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