when, as, while编辑
When you apply for a job, you must present your credentials.
When the students heard the teacher's footsteps, they all stopped talking.
We were about to start when it began to rain.
As the students walked to their dormitories,they sang happily.
While the teacher paraphrased the text in English,the students listened attentively and took notes.
Mary was dressed in blue while Jane was dressed in red.
whenever,every time,each time任何时候;每当编辑
Whenever I met her,she was studying.
Every time I met her,she was staying with him.
Each time I met her,she was listening to the music.
We've never met since we graduated from the college.
It is six years since we parted.
I had written my dissertation before my supervisor went abroad.
After the boy had finished his homework,he played football with his friends.
He will remain in college until(till) he finishes his Ph.D course.
I won't go with you until(till) I finish my homework.
as soon as,immediately,directly,once,the minute/moment (that) etc.编辑
as soon as,immediately,directly,once,the minute/moment (that)等引导的从句都表示从句的动作一发生，主句的动作随即就发生，常译为"一...就...".
As soon as we got home,the telephone rang.
I recognized her immediately I saw her.
Directly the teacher came in everyone was quiet.
Once you understand this rule,you'll have no further difficulty.
I want to see her the minute/moment (that) she arrives.
no sooner...than,hardly(scarcely)...when引导的从句也表示"一...就","刚...就"的含义。但它们只用于过去时:主句中的动词一般用过去完成时，从句用过去时.no sooner,hardly位于句首时，主句的谓语要部分倒装.
He had no sooner arrived home than he was asked to start on another journey.
No sooner had he arrived home than he was asked to start on another journey.
No sooner had the words been spoken than he realized that he should have remained silent.
Hardly had he reached the airport when the plane took off.
Where there is a will,there is a way.
You can go wherever(anywhere) you like these days.
Wherever (Everywhere) they went,they were warmly welcomed.
I'll take you anywhere you like.
引导原因状语从句的连词有:because,as,since,for,now that,seeing that,considering (that),in that等。
I didn't go abroad with her because I couldn't afford it.
Since traveling by air is much faster, they decided to take a plane.
As it is snowing, we shall not climb the mountain.
It must have rained last night, for the ground is wet.
Now (that) you've passed your test, you can drive on your own.
Seeing (that) the weather is bad, we'll stay at home.
Considering (that) he's only been learning English a year, he speaks it very well.
Advertisement is distinguished from other forms of communication in that the advertiser pays for the message to be delivered.
I'm in a slightly awkward position, in that he's not arriving until 10th.
引导条件状语从句的连词或词组:if（如果）,unless（除非）,as(so) long as（只要）,on condition that(条件是...),provided/providing that（假如）,suppose/supposing（假如）,in case（如果）,for fear(that/lest)(惟恐;以免),only if(只要;只有),if only(但愿;要是...该多好)等。如果主句是将来时，条件状语从句用一般现在时表示。
I'll buy a computer if I am able to save up enough money.
Unless the weather was bad,my father always used to take a walk in the evening.
suppose/supposing that,provided/providing (that)假如编辑
Suppose you had a million pounds -- how would you spend it?
Supposing (that) it rains,can we play the match indoors?
I will agree to go provided/providing (that) my expenses are paid.
as(so) long as,on condition that,in case编辑
as(so) long as(只要...就...),on condition that(在...条件下;倘若),in case(以防万一，万一，如果).
As long as you love me.
As long as it doesn't rain,we can play.
You can go out on condition that you wear an overcoat.
You'd better take an umbrella in case it rains.
only if ,if only编辑
Only if a teacher has given permission,is a student allowed to enter this room
If only he had come,he would have met you.
If only I could swim.
让步状语从句的连词或词组有:although虽然，though虽然，even if/though即使;纵然;尽管，as尽管，while尽管，whoever(no matter who)不管谁，whatever(no matter what)无论什么，whenever(no matter when)无论什么时候，wherever(no matter where)无论哪裡，however(no matter how)无论怎样，whether..or不论...还是。
Although they have been talking for a long time,he cannot make her believe him.
Though they lack offcial support,they continue their struggle.
Though he is old,yet(still,nevertheless) he works day and night.
Even if I failed again,I will not give up the experiment.
I like her even though she can be annoying.
whatever(whoever,whichever,whenever...)/no matter what(who,which,when...)编辑
Whoever(No matter who) wants to speek to me on the phone,tell them I'm busy.
Wherever(No matter where) you go,I'm right here waiting for you.
Whenever(No matter when) you call on us,you are welcome.
Strong as you may be,you cannot lift it.
Late as it was,they continued to study.
Youngest as he is in our class,he studies very well.
Child as she is,She knows a lot.
Hard as he tried,he was unable to make much progress.
Much as I like you,I couldn't live with you.
Much as I would like to stay,I really must go home.
Call as you may,he will not come.
Published as it was such a time,his work attracted much attention.
Whether it rains or not, we're playing football on Sunday.
Whether she is sick or well, she is always cheerful.
引导目的状语从句的连词或词组一般有:so that以便，in order that以便，in case免得;以防，for fear(that)惟恐;以免，lest & for fear that惟恐;以免;为不使；now that & given that因为。
She wanted tea ready at seven so she could be by eight.
They started early so that they might arrive in time.
They stopped at Hangzhou in order that they could go around West Lake.
She explained again and again in case we should misunderstand her.
They spoke in whisper for fear (that) they might wake the baby.
Lest anyone should think it strange,let me assure you that it is quite true.
结果状语从句一般由so,that,so that,so...that,such that等引导放在主句之后。
He spoke so fast that nobody could understand what he was saying.
He made such repid progress that he soon began to write articles in English.
There is so little time left that I have to tell you about it later.
He told us such a story that we all laughed.=He told us so funny a story that we all laughed.
The shops were closed so I didn't get any milk.
He phoned me on arrival so that I knew he was safe and sound.
Suddenly it began to rain heavily,so that it was almost impossible to carry on driving.
注意：So that引导结果状语从句时：so that前常有逗号，从句中常无情态动词；引导目的状语从句时：so that前常无逗号，从句中常有情态动词。
as引导的方式状语从句，意思为"in the way or manner that"编辑
Why didn't you catch the last bus as I told you to?
She enjoys all kinds of music,as I do.
Like me,she enjoys all kinds of music.
Nobody understands him like/as I do.
They looked at me as if/as though I were mad.
They look as if/as though they know each other.
She likes reading better than (she likes) going to parties.
He has lived here longer than I (has lived).
They love the girl than (they love) him.
He has more friends than she (does).
Air in the country is much fresher than that in the city.
She is younger than me. <Spoken English>
You are more industrious than her. <Spoken English>
as..as 或 not so/as..as编辑
We were as fortunate as them (they were).
I hope she will make as much progress as you (have done).
She runs as fast as a boy (does).
The more you listen to English, the easier it becomes.
The harder you work, the greater progress you will make.
The more pictures I take,the more skilled I become.