内容正文:
中考英语现在完成时知识梳理
一、现在完成时的构成
1. 肯定式:
主语+have/has +过去分词+其它
① I've just copied some new words. 我刚抄写了所有的生词。 (表示不要再抄了)
② She has lost her books. 她丢失了她的书。(表示到目前为止还没有找到)
③ We've just cleaned the classroom. 我们刚好打扫了教室。(表明现在教室是干净的)
2. 否定式:
主语+have/has+not+过去分词+其它
① I haven't finished my homework yet.
② She hasn't travelled on a train.
③ We have never spoken to a foreigner.
④ I have never seen him before.
3. 一般疑问式:
Have/Has +主语+过去分词+其它 ?
① —Have you ever made dumplings? —Yes, I have.
② —Has she ever been abroad? —No, never.
③ —Have they found the lost books yet? —Yes, they have.
二、现在完成时的用法
1. 现在完成时的用法一:表示过去发生或已经完成的某一动作对现在造成的影响或结果。此时,常与时间副词already(已经),yet(还、已经),just (刚刚、仅仅),ever(曾经),never(从不),before(以前)等连用。
【知识拓展】
◆ already意为“已经”,通常用于肯定句中,可放在助动词之后,过去分词之前,也可以放在句末。
I've already read this book.
I've already washed my clothes.
◆ yet用在疑问句中意为“已经”,用在否定句中意为“还”,常放在句末。
—Has he found his watch yet? —No, not yet.
The woman hasn't fou