四六级根本语法的首要性：
有人说四六级没有单选题，又不评语法，那咱们温习语法有甚么用呢。没错，四六级是不直接考查语法，可是听力中必要听句子，浏览中必要认句子，作文中必要写句子，而语法是句子的骨架，有句子的处所就有语法，以是语法根本是四六级做题之底子。
1、并列句的组成
1.表并列、递进或顺承瓜葛。
and, both…and…， neither…nor…， not only…but also…， as well as。
The earth is one of the sun’s planets, and the moon is our satellite.
地球是太阳系中的一颗行星，玉轮是地球的卫星。
2.表迁移转变瓜葛
but(不成与although连用)，yet
What we are about to do is
perfectly legal. But please don’t discuss it with anyone.
咱们要做的事彻底正当，但请不要与任何人会商这件事。
3.表选择瓜葛
either…or…， not…but…, or, or else, rather than
Now you can have a rest or you can go to the cinema.
如今你可以苏息，或去看片子。
4.表因果瓜葛
for(表“因为”，一般不放在句首)，so
He found it increasingly difficult to read, for his eyesight was beginning to fail.
因为他的目力降低，他发明念书愈来愈坚苦了。
5.when“就在这时候，忽然”
sb. be about to do/on the point of doing sth. when…或人正要做某事，忽然……
sb. be doing sth. when…或人正在做某事，忽然……
sb. had just done sth. when…或人刚做完某事，忽然……
One Friday, we were packing to leave for a weekend away when my daughter heard cries for help.
一个周五咱们正在整理行李要去度周末时，我的女儿忽然听到了呼救声。
She had just finished her homework when her mother asked her to practice playing the piano yesterday.
昨天她刚完立室庭功课，她妈妈就让她操练弹钢琴。
6.and与or用于并列句
祈使句＋and＋报告句，and表顺承
祈使句＋or＋报告句，or表迁移转变
Find ways to praise your
children often, and you’ll find they will open their hearts to you.
想法经常表彰你的孩子，如许你就会发明他们甘愿答应向你洞开心扉。
7.while表比拟
夸大比拟瓜葛，意为“但是；而”
—I wonder how much you charge for your services.
——我想晓得你要收几多办事费。
—The first two are free while the third costs $ 30.
——前两次免费，可是第三次的用度是30美元。
2、并列句的省略
并列句独占的特色：不异的可以省略，余下的连结稳定。
例：
1.I am a teacher and I like English. → I am a teacher and likeEnglish.(主语不异，可省略)
2.I am lying in bed and I am reading a book.→I am lying in bed and readinga book.(主语和部门谓语不异，可省略)
注：若是是多个简略句并列，且并列连词不异，如：“句子1” and “句子2” and “句子3”。便可以把前面的and省略，酿成“，”，如：句子1 ，句子2 and 句子3。