复习现在完成时

• 1.She works in a factory. 一般现在时 • 2.I was doing my homework at this time yesterday. 过去进行时 • 3.We are going to have a picnic this Sunday. 一般将来时 • 4.They held a sports meeting last week.
since
4
区分短暂性动词与持续性动词.来自百度文库
英语动词根据词义可分为两种,一种是延续性的,一种 是终止性的,终止性动词(也可称为非延续性动词,瞬 间动词,或点动词),如begin,start,die,buy,leave, come等,表示动作的发生与结束于一瞬间完成,不能再 延续,所以它的现在完成时不能和表示延续的时间状 语连用,即不能与表示一段时间的状语,for+时间段, since+时间点/从句连用,也不能用在how long引导的 特殊疑问句
时
态
• 不同时间发生的动作，动词要用不同形式
已学习过的时态
名称 常见时间状语 动词形式
1.v原形 2.v+s/es（三单现）
often, always, sometimes, everyday… 一般现在时
现在进行时
一般将来时
now, look, listen… Tomorrow, next week…
am/is/are+v-ing
1.will/shall+v原形 2.am/is/are going to +v原形 1.v-ed（规则动词） 2.不规则动词 was/were+v-ing
一般过去时
Yesterday, last week…
过去进行时
At 8:00 last night…
判断下列句子的时态
2.不规则动词
Eg.
go—went—gone see---saw—seen forget—forgot--forgotten
Practice
I haven’t have finished my homework.
Has he finished his homework He has
No ,he hasn’t Yes,he has
现在完成时动词构成
have /has+v 过去分词
否定
助动词
疑问
haven’t hasn’t Have you……? Has he……?
动词的过去分词形式
1.规则动词
finish--finished--finished live--lived--lived carry--carried--carried stop—stopped--stopped
Pay attention 注意
She has not seen this film yet . She has already seen this film. I have already washed my hair. Have you washed your hair yet.
3
现在完成时中的 for 与 since
1. where is Jim? He has gone to Wuhan. 2. My parents have been to the Great Wall twice. They like there very much. 3. How long has Peter been in the West Hill farm?
一般过去时
• 5.Are you helping your mother .
现在进行时
No.6 Middle Shool of Ping yu
The
Present Perfect Tense
Designed by song wen chao
came here havein breakfast 1996
past
I’m not hungry now I still live here
现在完成时定义
now
future
1.过去发生的动作对现在造成的影响或结果。
I have just had my breakfast.
(现在我不饿)
•常与:already, yet, ever, never, just, before, once,twice等连用,也可以和包括现在在内的时间状语,如these days,today,this year,so far 等连用.
I have bought this pen for two months. I have had this pen for two months. √ had this pen. How long have you _____
•初中英语课本中常见终止性动词有:leave, go, come, arrive, begin, buy, borrow, die, join, become等.终止性动词要表示持 续时, 可用以下方法: •⑴.将时间状语改为时间段 + ago,句中谓语动词用一般过 去时. •eg.我弟弟参军两年了. My brother joined the army two years • ago. •⑵.若保留for+时间段,since+时间点/从句, 或用在 how long 句型中,则需将终止性动词改为相应的状态动词或延续 性动词
Pay attention 注意
1. has/have been to have/has gone to have/has been in
去过某地表示某人的一种经历,可与 once,twice,already,ever,never等连用. •去某地了,说话时某人已离开此 地,在去某地的途中或已在某地 •逗留在某地(已经一段时间). 常和for ten days,since I came here等连用.
2.过去已经开始，持续到现在的动作或状态
I have lived here for ten years. I have lived here since 1996/ten years ago.
•常与for +时间段,since+时间点/从句, in the last ten years等,谓 语只可用延续性动词.
• for + 时间段 与延续性动词的现在完成时 连用 • since + 时间点/从句
I have kept the library book for a week. = I have kept the library book since a week ago.
We have learned 1,000 English words _______ we came to this school.