例句：
1、She gets very upset if I exclude her from anything
要是有什么事情我不讓她參加，她會(huì)非常難過。
2、He asked if I had left with you, and I said no
他問我是否和你一塊兒離開的，我說不是。
3、Sometimes, that standard is quite difficult, if not impossible, to achieve
有時(shí)即便有可能達(dá)到那個(gè)標(biāo)準(zhǔn)，那也是非常困難。
4、If I could just make another small point about the weightlifters in the Olympics
請?jiān)试S我就有關(guān)奧運(yùn)會(huì)舉重運(yùn)動(dòng)員的問題再補(bǔ)充一點(diǎn)。
5、I wonder if you'd be kind enough to give us some information, please?
請問您能不能給我們提供一些信息？