1. It doesn't matter whether /if... 如果……也没关系.

It doesn't matter if you have made mistakes. Learn from your mistakes and you'll make progress.
如果犯错误了也没关系.从错误中学习,你就会进步.

2. It goes without saying that... 理应如此/不言而喻.

It goes without saying that women should have equal rights and opportunities with men.
女性理应拥有和男性平等的权利和机会.

3. It makes a / no difference (to sb.) ... (对某人来说)……很重要/无所谓.

It makes no difference to me whether you go or not. 你去不去对我来说都无所谓.

4. It occurred to me that... ……浮现于我的脑中.俄想起…….

It suddenly occurred to me that ' knew how to solve that problem.
我突然想起我知道怎样解决那个问题.

5. It won't do any harm to... 没有坏处.

It won't do any harm to try it. 试试又不会有什么坏处.

6. It would be wonderful if... 要是……那就太好了.

It would be wonderful if we can go visit Mount Emei this summer!
要是今年夏天我们能去峨眉山旅游就好了

7. It happened that...……很偶然.

It happened that I won the football lottery last week. 我上星期偶然中了足彩.

8. It helps if ... 如果……的话,将会(对某人)有帮助/好处.

It helps if you can conquer your shyness and yell out English crazily.
如果你能够克服你的羞涩,疯狂大喊英语,将会对你有好处.

9. It's amazing (that) ...……很了不起.

It's amazing (that) China became the third country that launched a manned spacecraft.
中国成为第三个发送载人航天飞机的国家,真是很了不起.

10. It is/was...that/who... [强调句句型]

It was Edward who told me about it. 告诉我这件事的是爱德华.