2019-2020 学年人教版英语八年级下册 Unit 8 Have you read Treasure Island yet
知识点 Section A 部分知识点 ◆1
现在完成时态: ●I
用法:1)表示过去发生且已经完成的某一动作对现在造成的影响或结果
–Have you had your lunch yet
–Yes, I have
I’ve just had it
(现在我不饿了
) 2) 表示动作或状态从过去某一时刻开始,一直持续到现在,而且可能还要继续下去
I’ve been at this school for over two years
3)表示经验:I have read this book three times
看过三遍 ●II
时间状语: already, yet, just, ever, never, before 单用,so far, twice,recently, in the past /last few years ,since 从句,没有时间状语,等
构成: “助动词have / has+ 动词的过去分词” — Have you read L ittle Women yet
你读过《小妇人》吗
— Yes,I have
/N o , I haven’ t
是的,我读过
/ 不,我没有
already 和yet 都可以作为现在完成时的标志词,但它们的用法不同:肯定句用already,否定句和问句改为yet
★already 一般用于肯定句中/末,“已经”
如:We have already cleaned up our classroom
I have done my homework already
【 注意:already 用于疑问句中时通常表示惊奇