外卖英文-由于英语短语
现在完成时是初二的语法内容,也是中考英语的重点和难点。
很多同学在刚学习现在完
成时时,都觉得很茫然,因为它似乎与一般过去时相似。那是因为这两种时态描
述的动作都开始于过去。
其实不然,现在完成时主要表示,发生在过去的动作延续到现在刚刚完成、或许
还要延续;侧重于这个动
作对现在带来的结果、产生的影响、积累的总和等等。而一般过去时则只不过是
表示动作发生在过去的什
么时候。弄清了这一区别,就很容易理解现在完成时了。
一、现在完成时定义
现
在完成时是过去的动作或状态持续到现在并且已经完成,对现在造成的影响,可能持续发生下去。在英
语
时态中,“时”指动作发生的时间,“态”指动作的样子和状态 。
1.
表示到说话人说话时已经完成的动作,却对现在仍有影响或结果。
例如:He has lost
his book.他丢了他的书。
2. 表示事情开始与过去,却一直持续到现在还在进行的事情。
例如:He has taught in our school for 30
years.他在我们学校教书已有30年了。
3. 表示从过去某个时间直到现在的这个时间范围内
不断重复发生的动作或情况,并且这个不断重复的动
作有可能继续下去,也有可能到现在就结束。
例如:My father has always gone to work by
bike.我父亲一向骑车上班。
4.同一般现在时可以表示将来一样,现在完成时也可以在时间状语从句里表示将来。
例如:I'll wait until he has written his
letter.我愿等到他把信写完。
二、句型:主语 + have has +
done(过去分词) + …
1、肯定句: ① 主语 + have has +
done + …
She has been to Shanghai.她去过上海.I have
finished doing my homework.我已经完成我的作业了.
2、否定句:
① 主语 + have has + not +done + …
I haven’t
seen this film.我没有看过这部电影.
She hasn’t finished
doing her homework.她还没有完成她的作业.
3、一般疑问句:① Have
Has + 主语 + done + …
Have you seen this film ?
Yes, I have. No, I haven’t .你看过这部电影吗?是的, 看过. 不,
没有.
Has she finished doing his homework ?Yes,
she has . No, she hasn’t.她完成她的作业了吗?是的, 完成了. 不,
没有.
4、特殊疑问句:
特殊疑问词 + have has + 主语 +
done + …?
Who has finished doing his homework
? 谁完成了作业?
三、标志词
时间状语:典型的表时间的词与现在完成时连用
与for
、since、 already、 yet、 ever、 never、
recently、just、before、 so far、 by now、 …等连用.
1.
for+一段时间 ( two weekssix monthsfive days)
表示动作延续多长时间
I have lived in Yaan for ten years.
I haven’t eaten anything for ten hours.
1. since+过去的某一个时间点
I have lived in Yaan
since ten years ago.
y :用于肯定句,
可放在助动词之后、过去分词之前,也可放在句末.
I have already
finished my homework.
: 用在疑问句中意为”已经”,
用在否定句中表示”还”, 常放在句末.
Have you finished your
homework yet?I haven’t finished my homework yet.
: 曾经 用于疑问句中:Have you ever been to Shanghai ?
你去过上海吗?
: 未曾 从未 I have never traveled by plane
before.我以前从来没有乘飞机旅行过.
ly:最近 用于肯定 否定 疑问句中I have
been busy have not seen Tom they
been here
recently?
eg1. He promised to pick me up at
the school gate.
However. He yet. D
A. didn't arrive
B. doesn't arrive
C.
isn't arriving
D . hasn 't arrived
2.- -China develops so fast.
-
That's true. It a lot already. D
A.
changes B. changed C. will change D. has changed
练习
1、Both his parents look sad。Maybe
they what' s happened to him.
A. knew B.
have known C. must know kow
现在完成时主要强调过去发生的动作
对现在造成的影响,或过去发生的动作还未结束,一直持续到现在或将
来,重点在于对现在的影响。这种
考查难度较大,往往无时间状语,需要从上下文分析、推理才行。故_
上两侧根据上下文分析、推理,正
确答案是B。
2、The famous writer one new book
in the past two years .
A. is writing B. was
writing C. wrote written
现在完成时常与recently(近来),so far(到目前为止),in the +一段时间
”等时间状语连用。因为上
述短语表示的是从现在起往前推算的一段时间,句中的动作是从过去某-
-时间或时刻开始持续到现在的。
故应选D.
3、一-Our country
a lot so far.
一Yes.I hope it will be even .
A. has changed well B. changed good
C.
has changed better D. changed better
C
5、Zhao Lan already in this school for
two years .
A. was studying B. will
study
C. has studied D. are studying
现在完成时时常与“for +时间段或since +过去时间点”连用(含从句,从句过去时)。
故应选C。
6、We Xiao Li since she was a
little girl .
A. know B. had kown C. have
known D. knew
C
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