仁爱版九年级上册英语语法专项课件 现在完成时2
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仁爱英语九年级上册语法精讲现在完成时(Ⅱ)1. 现在完成时的用法: 表示过去某一时间发生的动作或存在的状态,对现在仍Unit 1-topic1有影响。
现在完成时(?)e.g. I have just posted the letter. 我刚把信邮寄了。
1.现在完成时的构成:助动词have/has+过去分词。
它的肯定式、否定式、疑问式She has lost her watch. 她弄丢了手表。
和答语的结构如下表(以work为例):2. 现在完成时可以和不明确指出时间的状语连用,如already, yet,just,肯I (You)have worked.before, ever, lately, once 等。
定He (She/It) has worked.e.g. Have you heard from your friend lately?式We (You/They) have worked.你最近收到你朋友的来信了吗?否I (You) have not/haven ’t worked.3. 现在完成时也可以和包括现在在内的时间状语连用。
如this week, this定He (She/It) has not/hasn ’t worked.morning, today, thisyear 等。
式We (You/They) have not/haven ’t wore.g. They have moved three times this year. 今年他们已经搬了三次家。
ked.4. 现在完成时不能和明确表示过去时间的状语连用。
疑Have I (you) worked?如yesterday, last week, in 1999, two days ago,just now, when I came in 问Has he (she/it) worked?等。
式Have we (you/they) worked?Unit 1-topic3简Yes, you (I) have. / No, you (I) ha现在完成时(Ⅲ)单ve not/haven ’t.1. 现在完成时表示从过去某一时刻延续到现在的动作或状态,常与for ,回Yes, he (she/it) has. / No, he (shesince 引导的状语连用。