for 句型介绍 我不懂 for 表示 原因 目的 用途 但是 那些句子要用到 for

for 句型介绍 我不懂 for 表示 原因 目的 用途 但是 那些句子要用到 for
for 句型介绍 我不懂 for 表示 原因 目的 用途 但是 那些句子要用到 for

for 句型介绍 我不懂 for 表示 原因 目的 用途 但是 那些句子要用到 for
英语中的介词是用法很灵活也很活跃的一类词,for不仅可以表原因、目的、用途,还可以表时间等其他一些意义,可做介词也可做连词,作介词时后面加名词或相当于名词的短语,做连词时需要加完整的句子.前面二位也已经给你做了解释.其实在使用过程中,尤其是初级学习阶段,真的是只需要你记住一些固定的搭配就好,比如for the reason of……要想通过读语法书或是经别人一指点就能掌握这个“小词” 的用法,那确实是不可能的.希望你在学习过程中,把相近意义的词放在一起去记忆理解,不要孤零零地单记某一个词的用法.比如：for表原因时,就把它跟because、as等表原因的词对比；表时间意义时,就把相应的at、on、in表时间时的用法相区别,只有这样,在使用时才会避免出错.祝学习顺利!

for
1. prep.
(1)因为，由于 for this reason
(2) 表示时间\距离长度； for three days； He ran for three miles.
(3) 为了 ：What do you come here for?
(4) 表示等价交换： He sold his house for 30,000 dollar...

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for
1. prep.
(1)因为，由于 for this reason
(2) 表示时间\距离长度； for three days； He ran for three miles.
(3) 为了 ：What do you come here for?
(4) 表示等价交换： He sold his house for 30,000 dollars.
(5) 开往；前往 We set off for London.
(6) 代；替；代表 Red is for danger.
(7) 用于for + 名词或代词 + to + 不定式动词的名词短语中
The bell rang for the lesson to begin.
2. conj 因为 （表示推测或附加的原因， 前后为并列句）
It must have rained last night, for the ground is wet.
Kuntta ( a prisoner ) knew day broke, for he heard the birds singing.
尽管for 的用法较多，但记住常用的几个就可以了。
for的用法的确很多，可用作介词和连词，介词用法尤为丰富。以下详细列出了用法和句例，供你参考。
for 1 preposition
1
used to say who is intended to get or use something, or where something is intended to be used
I've got a present for you.
Someone left a message for Vicky.
2
in order to help someone or something
I looked after the kids for them.
Let me carry that bag for you.
3
used to say what the purpose of an object, action etc is
for doing something
a knife for cutting bread
What did you do that for?
4
in order to have, do, get, or obtain something
Are you waiting for the bus?
the qualifications necessary for a career in broadcasting
5
used to say how long an action or situation continues for
Bake the cake for 40 minutes.
We had been talking for a good half hour.
6
used to talk about distance
We walked for miles.
Factories stretch for quite a way along the canal.
7
if something is arranged for a particular time, it is planned that it should happen then
I've invited them for 9 o'clock.
A special meeting has been arranged for 18th October.
8
used to say where a person, vehicle etc is going
I set off for work.
the train for Manchester
9
used to say what the price or value of something is
a cheque for a hundred pounds
The diamond was insured for two thousand dollars.
10
because of or as a result of something
If, for any reason, you cannot attend, please inform us.
We could hardly see for the mist.
11
used to say which thing or person your statement or question is related to
I'm sure she's the ideal person for the job.
The questions on this paper are too difficult for 10-year-olds.
12
used to say which person or thing your feelings are directed towards
I came away feeling sorry for poor old George.
My deep love for him still remains.
13
used to say at which meal you eat something
We had pasta for lunch.
14
used to say which company, team etc you belong to
I've worked for the BBC ever since I left university.
Deborah used to play for the A team.
15
supporting or in agreement with something or someone
We have studied the arguments for and against nuclear energy.
How many people voted for the proposal?
16
used to say what a word or sign means
What's the French word for 'happy'?
Red is for danger.
17
used to say that a particular quality of someone or something is surprising when you consider what they are
She looks young for her age.
It's cold for July.
18
as a representative of other people
Paisley claims to speak for the majority of local people.
19
used to say what is possible, difficult, necessary, unusual etc
for somebody/something to do something
It's unusual for Donald to be so bad-tempered.
There is an urgent need for someone to tackle this problem.
20
for each/every
used to say that there is a relationship between one amount and another
For each mistake, you'll lose half a point.
For every three people who agree, you'll find five who don't.
21
something is not for somebody
used to say that something is not the kind of thing that someone likes or will enjoy
City life is not for me.
This book is not for everyone.
22
it is (not) for somebody to do something
used to say whether it is someone's right or duty to do something
It's not for me to tell you what to do.
It will be for you to decide what action you should take.
23
if it wasn't/weren't for somebody/something
also if it hadn't been for somebody/something
used to say who or what prevents or prevented something from happening
If it hadn't been for you, I should have drowned.
24
that's/there's somebody/something for you!
spoken
a) used to say that a particular kind of behaviour or situation is typical of someone or something, especially when you do not expect anything better from that person or thing
I know it's outrageous, but that's Melissa for you.
b) used when you are annoyed or disappointed to say that something is the opposite of the quality you are mentioning
Well, there's gratitude for you! Here am I trying to help and you tell me not to interfere!
25
be (in) for it
spoken to be likely to be blamed or punished
You'll be in for it if she finds out what you've done!
see usage note since
for 2 conjunction
formal
used to introduce the reason for something
ￚsynonym becauseI cannot tell whether she is old or young, for I have never seen her.He found it increasingly difficult to read, for his eyesight was beginning to fail.

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相信你已经看过语法书了，这一块内容可讲了一大串一大串了，其实这个词只是个有意义的连词，你必须先弄懂前后两句话之间关系就好了，看看有没有因为，为了，用作的意思，有就选它了，很简单的，分给我吧