主语,谓语,宾语,状语

一、哪些词可以充当主语

1,名词

例如： A mooncake is a delicious, round cake.

The first truck is carrying a few baskets.

The temperature will stay above zero.

The doctor looked over Mrs. Brown very carefully.

China does not want to copy the USA’s example.

2,代词

例如： It’s a young forest.

I don’t know if it will grow.

That’s a bit expensive.

You’d better buy a new pair.

I’m afraid we haven’t got any black shoes.

3,数词

例如：One and two is three.

One is not enough for me. I want one more.

One of them is English.

Suddenly one of the bags fell off the truck.

Two will be enough.

4,不定式 （常以 It’s adj. to do sth. 形式出现）

例如： To give is better than to receive =Its better to give.

I found it difficult to get to sleep.

It’s glad to see you again.

It was difficult to see.

But it’s good to swim in summer.

5,IT 作主语，有如下情况：

1)指代刚刚提到的事物：What’s this ? It’s a bus. (指代what)

2)指代一个你不知道或判断不清性别的人：Who’s knocking the door? It’s me. (指代 who) Who’s the baby in the picture? It’s my sister. (指代 who)

3) 表示时间，天气，距离：

What’s the time? It’s eight o’clock. (时间)

What’s it going to be tomorrow? It’s going to be rainy.(天气)

How far is it? It’s about one kilometre away. (距离)

6. THERE 引起的There be 句型中，be 作谓语，主语位居其后。如：

There are many different kinds of mooncakes.

There will be a strong wind.

二、谓语 谓语谓语是用来说明主语做了什么动作或处在什么状态。谓语可以由动词来担任,一般放在主语的后面。

I like walking.

We don't know him very well.

我们不太了解他。

She speaks English fluently.

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