译林版八年级英语下册Unit 3 Online tours现在完成时学案（含答案）

疑问式

简略回答 He /She/It has worked.

He /She/It has not/hasn’t worked.

Has he/she/it work

Yes,he/she/it has.No, he/she/it hasn’t I /We/ You/They have worked.

I /We/ You/They have not/haven’t worked.

Have I/we/you/they worked

Yes,I /we/you/they have.No, I/we/ you/they haven’t 三、现在完成时的用法 1.强调过去的动作对现在造成的影响。常被just、already、yet 等副词修饰。例如： 　　— Have you had lunch yet 你（已经）吃午饭了吗？ 　　— Yes, I have. I’ve just had it. 是的，吃过了。我刚刚吃过。（现在我不饿了） 2. 表示从过去某一时刻开始一直持续到现在的动作或状态。这个动作可能刚停止，可能仍然在进行。常带有for和since等表示一段

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