现在完成时能与before搭配么
现在完成时能与before 搭配么
现在完成时能与before搭配。
当before词形为副词作时间状语时，往往用现在完成时。
例如：I have never en such a kind man before.
before的用法：
一、 before用作连词
1． before用作连词时，意思是“在……之前；还没来得及 …… 就”。例如：entrylevel
Before she could move, she heard a great noi, which grew to a terrible roar. 她还没来得及动弹，就听见有很响的声音，接着就成了可怕的隆隆轰鸣声。
Before I could say a word, she had stormed out of the room. 不等我说一句话，她就冲出了江西师大自考网
房间。
Don’t count your chickens before they are hatched. 不要高兴得过早。
2． 用于It + be + 时间段 + 句型中，意思是“在……之后才……”。例如：
It will be five years before I e back.
我五年后才能回来。
It was not long before the enemy was driven out of their country. 不久之后，敌人就被赶走了。
如果主句中用否定式，则表示“不多久……就”。
It won’t be long before they understand each other. 他们不久就会互相了解的。
3． 还有“趁……（还没有）”之意。例如：
They are thinking of buying the hou before the prices go up. 他们正在考虑趁房价未涨
时把房子买下来。
Do it before you fet it. 趁早动手，以免忘了。
二、before用作介词
firework歌词before用作介词时, 可以指时间“earlier than在……之前”，也可以指位置“in front of在……之前”。例如：
There is nothing that has not been bitter before being ripe. 凡事在成熟前，都是有苦味的。
Don’t put the cart before the hor. 不要本末倒置。
He was brought before the judge. 他被带到法官面前。
三、before用作副词
before用作副词时，意思是“at an earlier time / in the past以前”。例如：
I’ve en the film Titanic before. 我以前看过《泰坦尼克》这部电影。
I have never en such beautiful flowers before. 我以前从未见过如此美丽的鲜花。
四、短语before long与long before的区别
before long是“很快，不久”的意思, 可以用于各种时态。例如：
Before long, he went to America. 不久，他就去了美国。
I hope to e you before long. 我希望不久后再见到你。
而 long before是“很久以前”的意思，一般用在过去时或过去完成时的句子里。例如：
musclepowerShe said she had read the novel long before. 她说她很久以前就读过这部小说。
That happened long before. 那件事发生在很久以前。
before现在完成时
可以
I （not read）the book before.（现在完成时）
haven't read
现在完成时have/has+动词的过去分词
祝你进步
before现在完成时放哪里
before现在完成时一般放在句末。如：I have never been to the Great Wall before.
什么现在完成时 现在完成时的结构 现在完成时要注意哪些
现在完成时
指着眼于现在 强调过去的动作对现在造成影响
句型：This is the first/best/the only book that I have ever read.
It has been three years since I learnt English.
=it is three years since I leant English.
yearbook
4过去完成时
是指过去的过去
Hardly /scarcely had I arrived at the station when the bus left.
No sooner had I arrived at the station than the bus left.
特例：hope, wish, expect, think, intend, mean, suppo用过去完成时表示"原本… had expected, had intended 表示本期盼，本打算
句型： No sooner than hardly/scarcely when
No sooner had he arrived at the station than the bus left
现在完成时能不能跟before? 例如：Have you been there before? 一般现在完成时后要跟什么时间状语的？
能 。现在完成时跟的时间状语 一般就是 already yet just before 。还有for 短语（for后加时间段）since短语（since后加过去的时间点）
现在完成时
讲解如下：
——————————————————————--——-
现在完成时用来表示之前已发生或完成的动作或状 态，其结果的确和现在有联络。动作或状态发生在过去 但它的影响现在还存在；也可表示持续到现在的动作或 状态。其构成： have (has) +过去分词。
现在完成时的基本构成方式是用动词have加上过去分词。它是用来表达过去发生事情的另一种方式。
He has studied English and French.
他学习过英语和法语。
成都花艺培训
I have read many books.
flyer我读过很多书。
通常一个动词的过去分词和他的过去式是一样的，但是有一些动词的过去分词有不规则的形式。
be been
thailand是什么意思go gone
e
e
run
run
swim swum
fly
flown
e
en
speak spoken
do done
give
given
hide hidden
bee bee
take
taken
get gotten / got
break broken
shake shaken
wake
waken
awake awaken
ri rin
lay lain
fall fallen
begin begun
know known
fet
fottenmatter是什么意思啊
write written
choo chon
drink drunk
eat
eaten
bite bitten
show
shown
She has fotten her name. She has amnesia.
她已经忘记了自己的名字。她有健忘症。
I have already drunk the coffee.
我已经喝过咖啡了。
They have gone to e the President.
他们已经去见校长了。
She has e to e you.
她来看过你了。
当have被用在现在完成时态中时，它可以和前面的代名词一起组成缩写形式。
I've been to New York once before.
欧盟是什么
我曾经到过纽约。
He's gone to the fish market.
他已经去过鱼市了。
We've e to help.
我们已经提供了帮助。
现在完成时用not来表达否定形式。当有not出现的时候，have可以和not组成缩写，但是此时不能和前面的代名片语成缩写。
