替代用法

Amy

代名词it

代名词it虽是文法上的主词或受词，有时并非真正的主词或受词，而是引介前面或后面真正或逻辑的主词。

It 可指天气、时间、距离、情况等。

It rained heavily this morning, but it cleared up by noon.

今天早上雨下得很大，不过到中午就放晴了。

It is almost summer now, so it is very hot.

现在几乎是夏天了所以天气很热。

It's getting hotter and hotter.

天气一天天的凉了。

It's ten miles from here to the station.

从这儿到车站有十英里远。

How far is it from your home to your school?

从你家到学校有多远？

It's noisy here. I can't hear you.

这里好吵，我听不见你说话。

"Who is It?" "It's me, Christina/Coby."

谁呀？ 是我，Christina/Coby。

one / ones 代替前面提过的不定名词以避免重复(某一个)

"I bought a digital camera yesterday."

「我昨天买了一个数字相机。」

"Can I have a look at it? I want to buy one, too."

「我可以看一看吗？，我也想买一个。」

"Do you have a knife? I need one to sharpen my pencil."

「你有刀片吗？ 我需要一把刀片削铅笔。」

"Yes, I have one. It is in my pencil case."

「我有一把，在我铅笔盒里。」

"Don't forget your lunchbox!" "I've got it."

「不要忘记你的便当！」 「我已经拿了。」

"These apples are too small. Do you have bigger ones?"

这些苹果太小了，你们有大一点儿的吗？

"The bigger ones are all sold out. We have only small ones left now."

「大的都卖完了，现在只剩下小的。」