中学英语连词的用法
来，今天小编跟大家讲一下有关的英语语法的用法，接下来，小编给大家准备了中学英语连词的用法,欢迎大家参考与借鉴。
中学英语连词的用法
1.并列连词
both…and “既…又…”，谓语用复数动词
neither…nor “既不…也不…”，含否定意义，遵循就近原则，谓语动词由靠近它的那个主语来决定单复数。
either…or… “或者 …或者…”、“不是…就是…”
and“和”， 连接两个并列成分，连接谓语时两个动词时态应一致。
but “但是”， 表转折，不能与 though1 同时出现在句中。
or “或者”，在否定句中，并列成分的列举常用or，而不用and。
例： I have brothers and sisters.(否)
I don't have brothers or sisters.
= I have no brothers and no sisters.
2.引导宾语从句的连词
陈述句：that 可省略
一般疑问句：if /whether “是否”
特殊疑问句：特殊疑问词
3.引导原因状语从句的有：because (不能与so同时出现在句中)
4.引导时间状语从句的连词：
A. when(当…时候)，as2 soon as…(一…就…)，not…until3(直到…才)，after(在…之后)引导的主从复合句，主句为一般将来时，从句则用一般现在时来代替一般将来时。
例：I won't leave until he comes back.
B. since4(自从…以来)引导的主从复合句，主句为现在完成时，从句用一般过去时。
例：We haven't met each other since she left here last year.
C. while5(当…时候，一边…一边…)它引导的时间状语从句常用进行时态。
例：My father came6 in while I was7 doing my homework.
5.引导条件状语从句的连词
if ，“如果”，引导条件状从，主句用一般将来时，从句则用一般现在时。
请区别：if，“是否”，相当于whether，引导宾语从句，时态根据语境确定。
如：1)I don't know if it ____ (rain) tomorrow.
2)If it ______ (rain) tomorrow, I _____________ (not climb) the hills.
3)Joan and Mary haven't seen8 each other_____they left school five years ago.
A.as B.before C.after D.since
扩展：疑问句句型一览
1) 一般疑问句
Is he a doctor?
Do you the way to the station?
2) 反意疑问句
He is a teacher, isn’t he?
It is quite cheap, don’t you think?
3) 特殊疑问句
What is the distance/width/size/population/temperature/fare?
Who is he?
What is he?(干什么的)
What is he like?
How is he?
How do you like him?
What do you think of him?
What ever1 do you mean by saying2 this?
4) 选择疑问句
He is a doctor or a nurse?
5) 间接疑问句
Do you know how old he is?
Tell me if (whether) you like it.
What do you think/say/suppose I should do?
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