连词专题复习

(共14张PPT)
连词是连接词、短语、从句或句子的词。连词是一种虚词，在句中不能单独使用。
Which skirt is more expensive, the which one or the green one
You’d better put on more clothes, for it’s very cold outside.
Jim is so clever that he understands everything.
Not only Lily but also Tom comes from America.
I want to know whether it will rain tomorrow.
并列连词
从属连词
一、并列连词
1.表示平行或对等关系的并列连词：
and “和” ； both…and… “…和…两个都”；
not only…but also… “不但…而且…”
neither…nor… “既不…也不…” 等。
2. 表示转折关系的并列连词：
but “但是”； yet “然而”；however “然而”；
while “而”； 等等。
3. 表示选择关系的并列连词：
or “或者”； either…or… “要么…要么…” 等。
4. 表示因果关系的并列连词：
because “因为”；so “所以”； as “由于”；
for “因为” 等。
二、从属连词
引导宾语从句的连词
that ,if / whether(是否) ,what / when / where / how… 引导宾语从句。
2. 引导状语从句
when / while / before / after / 等引导时间状语从句。
if(如果) / unless (除非）等引导条件状语从句。
so…that… / such … that…引导结果状语从句。
不能同时出现在一个句子中的连词：because 与 so “因为…所以… ”; though / although 与 but “虽然…但是…” .
1. _______ he was tired, _______he couldn’t walk there.
/ , so B. Because , so C. So , because
2. _______ I live near the sea, but I’m not a good swimmer.
Though B. Although C. /
either … or…；neither … nor…；not only … but also…连接两个主语时要用就近原则,即谓语动词要与nor, or , but also 后的主语一致。
1. Neither you nor he __________ a teacher.
A. am B. is C. are
Not only Han Mei but also Lily and Lucy _______ singing.
A. like B. likes C. is
…and ….; both …and…; both of …连接两个主语时，谓语动词用复数。
My mother and I _______ watching TV , when the accident happened.
A. is B. are C. were
Both of my grandparents ________ farmers.
A. are B. was C. is
and 和 or在否定句中
一般情况下，and 用与肯定句，or 用与否定句和疑问句。
They like English _______ Maths. 他们喜欢英语和数学。
He doesn’t like black ______ blue. 他不喜欢黑色和蓝色。
2. 在否定句中，如果所连接的两部分都有否定词，那么用and 而不用or连接。
The clock has no eyes ________ no ears.
钟表没有眼睛和耳朵。
但可以说：The clock has no eyes _______ ears.
and
or
and
or
3. and 因果，递进； or 转折“否则”的意思。
祈使句+and+陈述句 表因果、递进关系
祈使句+or+陈述句 表转折关系
Use your head, _____ you’ll have an idea.
A. or B. and C. so
Study hard, _______ you’ll fail in the exam.
A. or B. and C. then
if 和whether 引导宾语从句时，意思都是“是否”，一般情况下可以互换。但与or not 连用时，只能用whether.
我不知道他们是否会来帮我们。
I don’t know ________ they will come to help us or not.
A. If B. whether C. that
when , before, if （如果）,as soon as等连接状语从句时，当主句是将来时态，从句要用一般现在时态。（主将从现）
I won’t go shopping if it _______ tomorrow.
A. will rain B. rain C. rains
2. She will look after her little brother before her mother_______ home.
A. come B.comes C. will come
So … that…和 such… that …意思都是“如此…….以致……”。 它们的区别是 so 后面接形容词或副词，而在such …that… 中，that 前的词是名词。
The boy was so clever that he worked out the problem in no time.
It was such an interesting TV play that everyone of us liked to watch.
（错）Although he was weak, but he tried his best to do the work.
（对）Although he was weak, yet he tried his best to do the work.
Although和yet可以连用,但although不与 but连用.
（错）For he is ill, he is absent today.
（对）He is absent today, for he is ill.
for是并列连词,不能置于含两个并列分句的句子的句首,只能将其放在两个分句中间.