剑桥KET常考语法：条件状语从句+something/anything/nothing/everything

剑桥KET常考语法：条件状语从句+something/anything/nothing/everything

1. 条件状语从句

条件状语从句，指在某种条件下会发生的事，比如：

If I go to school tomorrow, I will meet him.(如果我明天上学，我会见到他。)

或者：I will meet him if I go to school tomorrow.

条件状语从句的语法形式是：

条件从句用一般现在时：

If I go to school tomorrow

主句，也就是条件满足时会发生的事用将来时：

I will meet him.

常见错误：很多考生习惯于将条件从句也写成将来时，一定要注意，条件从句要用一般现在时。比较：

If it snows tomorrow, I won't go to the party.(条件从句用一般现在时，正确)

If it will snow tomorrow, I won't go to the party.(条件从句用将来时，错误)

2. something/anything/nothing/everything等等

something: 某事，某件东西，用于肯定句

He looks ill. Something is wrong with him.(他看起来病了，他一定出了什么事情)

someone/sombody：某人，用于肯定句

We need to leave someone at home.(我们需要在家里留个人)

anything：某事，某件东西，用于否定句和疑问句

Is there anything I can do for you?(我能为你做什么吗)

anyone/anybody：某人，用于否定句和疑问句

Can anybody come and help me?(有没有人能帮我一下)

nothing：没有事情，没有东西

There is nothing you can do.(你什么都干不了)

no one/nobody：没人

Noboday knows he was here.(没人知道他来过这)

注意：nothing/no one/nobody已经是否定了，所以我们不把它们跟not放在一起使用。比较：

There is nobody home.(家里没人)

There is not nobody home.(错误)

not...anything=nothing，比较：

I do not have anything = I have nothing

not...anyone/anybody = no one/nobody

I don't know anyone in this room = I know no one in this room

everything：每一件事，每个东西

Everthing in this room is so beautiful.(房间里的每样东西都那么漂亮)

everyone/everybody：每个人

Everyone is having a great time.(每个人都很开心)

使用以上所有词时，都要用第三人称单数：

No one wants to speak to him.

Somebody has to do something to stop him.

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