精品中的精品!可以直接打印!

2. , ,常与since + 过去的时间点，for +时间段，so far(到目前为止) 等时间状语连用。

如：I have learnt English for more than ten years.我已经学了10多年的英语。

(从10年前开始,持续到现在还在学) 她已经游泳了半个小时

(半个小时前已经开始游泳,到现在还在游)

3. 如：I have ever been to the Summer Palace? (我曾去过颐和园)

I have never had a car.(我从未有过汽车。)

4.

have been to,表示去过某个地方，现在已经回来了

have gone to表示去了，但还没有回来，也许是在去的途中

have been in指的是在某个地方，从过去一直延续到现在

5. :come，go，die延续性动词才能使用。

如：他已经死了十年了。

不能说成：He has died for ten years.×

正确表达是：He has been dead for ten years. √

go out外出 →be out

die 死→be dead

arrive到达 →be here

begin(start)开始→be on

come back回来 →be back

leave离开 →be away

fall ill(sick, asleep) 生病/入睡

→be ill(sick, asleep)

get up起床 →be up finish完成 →be over put on穿 →wear 或be on open打开 →be open join加入 →be in 或be a member of… close关门 →be closed go to school去上学 →be a student borrow

借 →keep buy买 →have

1、现在完成时构成：have/has + done

2、当句中有never, ever, just, already, yet, before等时，常用现在完成时。

3、当句中有"for +段时间"或"since +点时间"等时，主句常用现在完成时，

谓语动词必须是延续性动词，若是非延续性动词，要改为延续性动词。