常用引导词：when，as，while，as soon as，before，after，since，not….until
特殊引导词：the minute，the moment，the second，every time，the day，the instant
特殊引导词：seeing that，now that，in that，considering that，given that.
Now that everybody has come, let’s begin our conference.
The higher income tax is harmful in that it may discourage people from trying to earn more.
常用引导词：so that，in order that
特殊引导词：lest，in case，for fear that，in the hope that，for the purpose that
The boss asked the secretary to hurry up with the letters so that he could sign them.
The teacher raised his voice on purpose that the students in the back could hear more clearly.
特殊引导词：such that，to the degree that，to the extent that，to such a degree that…
He got up so early that he caught the first bus.
It’s such a good chance that we must not miss it.
To such a degree was he excited that he couldn’t sleep last night.
特殊引导词：as/so long as，only if，providing/provided that，supposing that，in case…
We’ll start our project if the president agrees.
You will certainly succeed so long as you keep on trying.
Provided that there is no opposition, we shall hold the meeting here.
常用引导词：though，although，even if，even though
特殊引导词：in spite of the fact that，whatever，whoever，wherever，whenever，however
Much as I respect him, I can’t agree to his proposal.
The old man always enjoys swimming even though the weather is rough.
He won’t listen whatever you may say.
特殊引导词：the more … the more …，just as …
She is as bad-tempered as her mother.
The more you exercise, the healthier you will be.
Food is to men what oil is to machine.
When in Rome, do as the Romans do.
She behaved as if she were the boss.
Sometimes we teach our children the way our parents have taught us.
Adverb clause using Adverb Conjunction(副词连词，还是连词)
In front of SUBJECT, and turn the sentence behind into a adverb clause.
Because of me, he study very hard. This is wrong :
He because me study very hard.
⌈ I like him because he often help the poor.
Because he often help the poor, I like him. ⌋ Attention the [,]
When / Once / While / If / Though / Although
When he came I was singing. When 引导的叫状语从句
If clause SUBJECT is same as main sentence SUBJECT, hidden the SUBJECT of clause and set the Verb to present participle.
eg. When I saw him, I felt happy. = When seeing him, I fell happy .
eg. While I was in Beijing, I had a good time. = While
being in Beijing, I had a good time.
eg. When I’m unhappy, I don’t feel like talking. = When unhappy, I don’t feel like talking
eg.When I have money, I’ll buy a car. = When having money, I’ll buy a car.
eg.If I am rich, I’ll buy a car. = If rich, I’ll buy a car.
eg.This is wrong :
If having money, I’ll buy a car.
however / therefore / Thus
He is nice, so I like him. = He is nice; therefore, I like him. = He is nice; I , therefore, like him. = He is nice. Therefore, I like him.
This is wrong :
He is nice, therefore I like him.
He is nice, but I don’t like him. = He is nice; However, I don’t like him.