PETS

英语句子的连接方式有六种

1破折号连接。He is trash----he is good for nothing 破折号意思为换句话说

He finally made his purpuse known to us---to run after Susam 连接同位语

2冒号连接，用来强调前面句中的名词

He has made his goal known to us: he wants to be a scientist.

3分号(加连接性副词，和下面5中的连接副词不同，如however, nevertheless, notwithstanding=but, therefore, thus=so, moreover, furthermore, in addition=and)，相当于逗号加上并列连词(and, so, but…)

However, you will have to go.

He is a man of principle; we all like him=He is a man of principle, so we all like him

He is nice; none likes him, though=He is nice, but none likes him.

4并列连词：a.转折并列句(but, yet, however, while)however he approaches the problem

b.因果并列句(for, so,)c.联合并列号(and, not only..but also.)d.选择并列句(or, neither..nor, either..or )

5连接副词(because, thought, if, unless, as soons as, when, once)，连接副词从句，表达时间、地点、方式、原因、条件、让步、目的、结果、比较。

6关系代词和关系副词，连接形容词从句。关系副词where=in/on/at which, when=in/on/at which, why=for which, how=in which..

关系副词要点：

a.在限定性形容词从句中，除where外，其余三个关系副词都可省略

I shall never forget the day (when) she came

That’s the reason (why) she left

I am sick of the way (how) he looks at me. How 成为多余，必须省略，

b.如果被修饰词在Be动词后作补语，省略被修饰词，保留关系副词。

That’s (the place) where he was born. That’s (the way) how he did it.

c.此四词也可视为疑问代词，引导名词从句，此时可做名词从句的宾语。

I know where he is.

复合关系代词，whoever=anybody who, whomever=anybody whom, whichever=anyone which, whatever=anything which. Whatever 和whoever还可做连接副词，此时等于no matter what, no matter who.这时引导的副词从句要与主句用逗点隔开，而做复合关系代词时则无分隔。如，whatever he says, it is a lie. Whatever he says is a lie.

前四种属并列句，用并列连词连接，后两种属复合句，用从属连接词连接，所以连接副词从句的连接副词和连接关系从句的关系代词和关系副词都可称为从属连接词，复合句的另外一种方式就是用非限定动词(非谓语动词)表达，包括动词不定式和分词结构，它们是短语不是从句，但它们构成从句的一部分，因为它们可以用从句的形式表现出来。

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