I'll get there, even if I have to walk.

我就是走也要走到那儿去。

《牛津词典》

I'll go mad if I have to wait much longer.

如果还要等更久的话，我会发疯的。

《牛津词典》

I'll go bonkers if I have to wait any longer.

如果再等下去，我非发疯不可。

《牛津词典》

If they had, they would have been tested to see if they needed treatment to prevent an infection like H.I.V.or hepatitis.

VOA: special.2010.02.10

If I have to do a poll here,most people, guaranteed,would say praise people.

如果我在这里做一项民意调查，保证大多数人，会说通过赞美来提升。

哈佛公开课 - 幸福课课程节选

We aren't very wealthy, so we don't have enough money to spend on that even if I wanted to.

我们不是很富有，所以即使是我想买，我也没有足够的钱去买。

不需要名牌 - SpeakingMax英语口语达人

If I have to get it back via mortgage interest refunds so be it.

FORBES: Guest Post: U.S. Taxes, Economy and Senior Citizens

It's something very bad, but if I have to do it, I'll do it.

NPR: Iraqi Refugees Struggle to Build a Life in the U.S.

"If I have to get a first down, I can, " Garrard said with a laugh.

WSJ: Garrard expects to compete for Jets' QB job