2、用法

　① 表示过去某段时间正在进行的动作

　　　 ---what were you doing at 9:30 last night?　　　 --- I was watching TV.

1、结构 was / were + doing

6、辨析 have / has been to ,　 have /has gone to ,　 have has been in

have/ has been to …　 曾经去过某地，现在已经回来

I have been to Paris 3 times.

have/has gone to…　 去了某地，现在还没回来，可能还在路上。

--where is your father ?　 --- he has gone to Shanghai.

have/has been in…　 已经在某地(呆了多久)

　My family have been in Chengdu for 20 years

(6) 过去进行时

5、延续和非延续动词。

　 在现在完成时中，有些动词不能与一段时间搭配，所以在与for , since 引导的肯定句搭配时，要用其他动词替代：

　 buy---have　　 borrow---keep　 die---be dead　 go/leave/move---be away (from)

　 begin/start---be on　　 fall asleep---be asleep　 finish/end---be over　

　 join---be in/ be a +名词　 come---be here　 open---be open　 close---be closed

I’ve left the school for 3 years. (　 )　 I’ve been away from the school for 3 years. (　 )

4、时间状语　 yet, already, recently , just, once, never, ever, so far, these days.

　　　　　　 since +过去的时间点/过去时态　　 for + 一段时间　　 in the last(past) + 一段时间

3、结构：

　 肯定句：主语+ have / has +V过分

　 疑问句：Have /Has + 主语+ V过分

　 否定句：主语+ haven’t / hasn’t + V过分

2、　 现在完成时表示从过去开始延续到现在的动作，常与for, since连用.

现在完成时表示动作才刚结束，但影响还在。

I have lost my pen .(结果是我的笔丢失了，我现在没有钢笔了)

--have you found your watch yet ?　　 --No , I haven’t found it yet.

I have lived here for 10 years . 我已经在这里住了10年(可能还会继续住下去)

1、already / yet 已经

already一般用于肯定，与完成时态和进行时连用，也可以用于疑问句，表惊讶。

I have already finished my work.

　 yet一般用于否定或疑问句。 Has she gone to school yet ?　　 His parents haven’t been to Paris yet.

3、　 时间状语

now , these days, 当句中有look, listen , can’t you see, can you see时

　　　　　　　　　　　　　 Listen! He is singing.

(5) 现在完成时

2、　 用法：

①　　 表示正在进行的动作　 I’m reading book now.

②　　 表示现阶段正在进行的动作或状态。 They are studying hard this term.