在高考中，it經常以形式主語出現，但同學們經常無法辨認出來，但是，it的用法，在高考考點中經常出現。事實上，it的用法不只只是形式主語那麼簡單，今天，知悅就帶大家揭開it的神秘面紗
一、強調句
主要形式：It is(was)+被強調的部分+that+其餘部分
舉例：I heard of the case yesterday.
It was yesterday that I heard of the case.
Was it yesterday that I heard of the case.
二、形式主語，形式賓語
舉例：It is no use arguing with her.
We think it necessary for him to go abroad for further study.
It seems that she hasn't heard of the news.
三、it的指代用法
1.指代上文可數名詞（單數）
舉例：Where is my bag?
It is on the playground.
2.指代上文不可數名詞（物質名詞）
舉例：Though the earth is covered with water.We lack water all over the world.It is very essential and precious for us to live on.
3.指代上文提到的某些事或行為
舉例：Peter's parents usually tell him to study hard,but it doesn't help work.
4.指代未證實的人
舉例：問：Someone is knocking on the door,Who can it be?
答：It must be Peter.
問:Who is it?
答：It is me.
5.指代嬰兒或小動物，寵物
The dog is Tony's.It is so lovely.
四、it的幾種專用法
用來指代時間，天氣，溫度，距離，狀況，環境
舉例：問：What is the time?
答：It is half past it.
問：It is rahter cold today.
答：So it is.
問：How far is it from your home to school?
答:It is about 5 Km
It is very far for us to work to the supermarket.
I dislike it when one speaks with his mouth full of food.
好啦，it的用法到此就結束啦，希望可以幫到大家哦
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