手机短信验证
连词
1．表并列关系： and，not only...but (also) ...，neither，nor，neither...nor...等词连接的并列句，在意义上主要对前一句子作补充或引申，包括肯定和否定两方面的意义。
Think it over，and you'll find a way out.
Not only is he himself interested in the subject，but also his students begin to show interest in it.
Neither does he work hard，nor does his brother.
2．表选择关系：or，either...or...连接并列句表示选择意义。
The children can go with us，or they can stay in.
Either you or I am right.
You have to move out of the way or the truck cannot get past you.
3．表转折关系：常用的有but，yet，while等。
Jane said she was ill，yet I saw her in the street just now.
Some men are rich，while others are poor.
语法易错题
英语单词记忆
英语语法练习题
He tried hard to catch up with his classmates，but he failed.
Mr.White is◇◇，while his wife is very thin.
James thought his explanation was convincing.However，nobody believed him.
4．表因果关系：常用的有so，for。
He must have been caught in the rain，for he is wet all over.
The shops were closed so I didn't get any milk.
5 when引导时间状语从句，意为“正在这时”，表示某件事正在发生或刚刚发生时，突然发生另一动作：
be about to do...when...be doing...when...be on the point of doing...when...had just done...when...
Tom was about to close the window when his attention was caught by a bird.
We were having a meeting when someone broke in.
用适当的从属连词填空
1．—My son is addicted to computer games.He is hopeless，isn't he?
—Yes，________ he is determined to give up and start all over.
2．Provide your doctor with a detailed medical history ________ he can give you accurate treatment.
3. ________ the parking regulations have become stricter，more people will use public transport and leave their cars at home.
4．________ Sandy's damage is unlikely to last long，it would apparently hurt the total economic output of the fourth quarter.
5．________ you read English easily，you'll find it is another cup of tea to make conversation in English.
6．________ I saw the beautifuldecorated house，I really wondered how she could manage that all by herself.
7．________ he could call the police，the thieves had run away with the suitcase，leaving him shocked and helpless.
8．—Well，Jane has many advantages，too.
—Oh，yes.________ others are weak，she is strong.
9．________ the news，so far，has been good，there may be days ahead when it is bad.
10．The woman rushed out ________ she felt the house shaking.
11. After the war，a new school building was put up ______ there had once been a theatre.
12．—I wonder how much you charge for your services.
—The first two are free ________ the third costs 30.
13．How can they expect to learn anything ________ they never listen?
14．Please call my secretary to arrange a meeting this afternoon，or ________ it is convenient to you.
15．Scientists are warning that ________ emissions of carbon (碳排放) are cut，we could be heading for an environmental disaster.
16．I will accept Guy coming with us，________ he pays for his own meals.
17．The movie Life of Pi is so attractive that it holds the audience's curiosity ________ the story reaches the end.
18．________ interesting a book it is，the boy never seems to be able to finish it off.
19．You seem to have a readymade answer ________ I ask you a question.
20．________ you need something，please don't hesitate to let me know.
答案 1.unless 2.so that 3.Now that/Since 4.Although/Though 5.Even if /Eventhough 6.When 7.Before 8.Where 9.While 10.immediately/ nstantly/directly/as soon as /the minute/the instant 11.where 12．while 13.when 14.whenever 15.unless 16.only if/unless 17.until 18.However 19.whenever 20.In case
