①I’ll go to your home when I have finished my homework.
②If it has stopped snowing in the morning,we’ll go to the park
4.现在完成进行时
have/has been doing表示过去开始的动作一直持续到现在并在继续之中,仍有可
能继续下去。
I’m exhausted,because I have been painting the room all day. 5.一般过去时
用动词的过去式表示。其主要用法有:
(1)表示过去某一时刻或某一时间内所发生的事情或情况,其中包括习惯性的动
作。
Last night I listened to the radio for two hours and went to bed at midnight.
(2)用一般过去时的句子一般有过去的时间状语。
Have you seen a pen?I left it here this morning. 6.过去进行时
构成:was/were doing。其主要用法有:
(1)表示过去某一时刻正在进行或一段时间内一直进行的动作或情况。
This time yesterday we were having an important meeting.
(2)过去进行时常与always,continually,frequently 等词连用,表示过去经常发生
或反复发生的情况。
The old man was always losing his way.
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