連詞的分類

并列連詞和從屬連詞

主要分為兩類：

并列連詞

1)表示并列關(guān)系的并列連詞有：and, both...and..., neither...nor..., not only...but also..., as well as等。

To make our dreams come true, we are supposed to set goals ______ then try our best to achieve them.

A. or B. and C. but

2)表示轉(zhuǎn)折關(guān)系的并列連詞有：but，yet，however，while等

Money is very important ______ it’s not the most important thing.

A. or B. and C. so D. But

3)表示選擇關(guān)系的并列連詞有：or, or else, either...or...,otherwise等。

—I am tired.—Stop working and have a good rest, _____ you’ll get ill.

A. or B. but C. and

4)表示因果關(guān)系的并列連詞有：so, for, therefore等。

注意：

for和because在表示“原因”時(shí)意思基本相同,一般可以互相代用。because引導(dǎo)的從句一般放在主句后,有時(shí)也可放在主句前,而for引導(dǎo)的句子只能放在主句后。另外

從屬連詞

1)引導(dǎo)時(shí)間狀語從句的從屬連詞有：when，while，as，after，before, since, until, as soon as等。

注意：

【例句】

I was doing my homework while/when my brother was playing computer games.

注意：

Since用于現(xiàn)在完成時(shí)

Not until位于句首要倒裝

as soon as引導(dǎo)的時(shí)間狀語從句，遵循主將從現(xiàn)的原則

2)引導(dǎo)原因狀語從句的從屬連詞有：because, as, since等。

3)引導(dǎo)地點(diǎn)狀語從句的從屬連詞有：where，wherever等。

引導(dǎo)條件狀語從句的從屬連詞有：if, unless, in case, as long as等。

4)

—Emma failed her exams. I think she should work harder.

—I agree. ______ she does, she’ll get good grades.

A. If B. BecauseC. Before D. Though

5)引導(dǎo)目的狀語從句的從屬連詞有：so that, in order that等。

6)引導(dǎo)讓步狀語從句的從屬連詞有：though, although, even though, however等。

Mary spends a lot of money on clothes ______ her family is not rich.

A. because B. though C. if D. so

7)引導(dǎo)方式狀語從句的從屬連詞有：as, as if, as though等。

8)引導(dǎo)比較狀語從句的從屬連詞有：as, as...as..., not so...as..., than等。

注意：

as...as

9)引導(dǎo)結(jié)果狀語從句的從屬連詞有：so, so...that..., such...that...等。

—Did you catch what the teacher said?

—No. She spoke _______fast that I couldn’t hear her very clearly.

A. which B. so C. such D. since

注意：

so foolish such a fool

so nice a flower such a nice flower

so many/ few flowers such nice flowers

so much/little money such rapid progress

so many people such a lot of people

so many

。

10)引導(dǎo)賓語從句、表語從句、主語從句的從屬連詞有：that, if, whether, what, when, why, where, how等。

注意：

if

易錯(cuò)點(diǎn)：

在否定句中，并列結(jié)構(gòu)用or連接，但含有兩個(gè)否定詞的句子實(shí)際上被看作是肯定結(jié)構(gòu)，要用and連接。

3.because“因?yàn)?rdquo;，so“所以”不能同時(shí)出現(xiàn)在同一個(gè)句子中，只能用其一。(al)though“雖然”，but“但是”也不能同時(shí)出現(xiàn)在同一個(gè)句子中。

4.句型both...and的用法連接主語時(shí)謂語動(dòng)詞用復(fù)數(shù)形式。

句型

①連接兩個(gè)成分,其謂語動(dòng)詞根據(jù)就近原則，與所靠近的成分保持?jǐn)?shù)的一致。

②

not only…but also…可以連接兩個(gè)句子，not only位于句首時(shí)，not only后的句子要倒裝。

句型

either...or...,neither...nor...連接主語時(shí)，謂語動(dòng)詞也采用就近原則。

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