it's 读作：英[ɪts] 美[ɪts]
一、词语解释
1、it's的意思是”它是“，是it is和it has的常用口语形式。
2、it's可以作为形容词性物主代词，后接名词；还可以作为名词性物主代词，单独使用，后不接名词。
3、it's后接形容词。
（1）It's + adj. + to do sth. 意为“做某事是......的”。It 为形式主语，放在句首；动词不定式为真正的主语，放在句末。
例句：It's very easy to learn English. 学习英语很容易。
（2）It's + adj. + for sb. to do sth. 意为“对某人来说做某事很......的”。
例句：It's necessary for us to have breakfast every day. 我们每天吃早餐是很有必要的。
（3）在“It's + adj. + of sb. to do sth.”句型中，形容词是表示人的性格或特征的词，如：nice，good，honest，brave，kind，clever，foolish等。
例句：It's clever of him to work out the difficult problem. 他能解出这道难题说明真的聪明。
3、为了突出或强调句中的某一成分以加强语气, 英语中通常用 “It is + 被强调成分 + that/who”结构，这一结构叫作强调结构。如果要转换为一般疑问句，只需将 "It" 与 "is/was" 交换位置即可。
4、另外，应该避免在正式的论文中使用缩写，所以如果你在论文中写了“it’s”，应把它改成更正式的形式“it is”。
二、短语搭配
It's splendid 妙极了
It's raining 正在下雨
It's five thirty 五点半了
It's for you 给你的
It's not often 不是经常的
It's spring 是春天了
tell its own tale 不言而喻
三、双语例句
It's very important to me that you should be there. 你应该到场，这对我很重要。
It's difficult to express it in terms of science. 要用科学的字眼来表达它是很困难的。
Come on！ it's make your mind up time! 嗨！你该作出决定了！
Come on! It's time we made a start. 快点！我们该出发了。
It's time to put our plan into operation. 现在应该执行我们的计划了。
It's a good job you were there to help. 幸亏你来帮忙。
Come on, it's time to go home. 快点，该回家了。
It's important to try and make something of your life. 在一生中有所成就是很重要的。
I think it's time to go to bed. 我想该睡觉了。
It's a long time since they left. 他们已经离开很久了。