1) 连词是连接词、短语、从句或句子的词
2) 连词是虚词，在句子中一般不重读


常见连词：
Although (=though) 虽然
Although there was a severe drought, they got a bumper harvest.
Although the flat was comfortable, it was very expensive.
[注意]although 不可和but连用，但可以和yet, still连用。

As
1) 如…一样（表示比较）
It is just as you told me.
2) 当，随着(表示时间)
As I was coming here, I met Mr.Smith.
3) 由于
As he was not feeling well, we all told him to stay home.
4) 按照，正如
Do as the teacher says.
5) 虽然，尽管(as 在主语之前)
Rich as he is, he is not happy.
Try as you will, you won’t manage it.

As far as 就
As far as I know, we should have a seminar on Tuesday.

As if 宛如
It looks as if it is going to rain.
As long as(=so long as)
1) 只要
You can go out so long as you promise to be back before 10pm.
2) 有…之久
You may keep the book as long as you like.

As well as不仅，和，以及
He is learning English, as well as French.

Beside 此外
It is late, beside I am too tired to go out.

Either…or或者…或者
Either you come to my office, or wait for me at home.

Neither… nor既不…亦不
Neither you nor I could do it.

Even if（=even though）即使，纵然
It won’t matter even if he doesn’t come; he has handed in his opinion in writing.

Hence所以
My mother is by herself; hence I must go home now.

However可是，然而
He said he was certain. However he was wrong.

In case 以防，以免，因恐
He carries a spare wheel in case he has a puncture.

In order that为了，以防
We all got up early in order that we might start at seven.

In the meantime当…之时
He will be back in ten minutes. In the meantime let’s wait outside.

Lest因恐，以免
Take care lest you should catch influenza.

Nevertheless然而，但是
There was no news; nevertheless, she went on hoping.

No matter不论
No matte when you come, you’ll be more than welcome.

Nor也不
Without their help, you can’t do it. Nor can us.
He doesn’t like Japanese car, nor do I.

No sooner than一..就
No sooner had I gone outside than the phone rang.

Not only…but also不但…而且
She not only sings like and angel, but also dances beautifully.

Now that既然
Now that you are a big boy you must behave better.