如果

in the event that

in case

if and when

in the event

on condition that

on the understanding that

supposing

provided that...

that would be OK if

according as

如果[rúguǒ]

-if;incase;intheeventof;supposingthat:
Werethistohappen...;如果这样
Ifithadn'tbeenforhim,wewouldhavegoneastray.如果不是他的话，我们就迷路了。

如果这是真的又该如何呢？
What if it is true?

如果明天天气好，我们宜于出门。
If it is fine tomorrow, we should go out.

如果他现在回来怎么办？
What if he comes back now?

如果他不同意该怎么办呢？
What if he doesn't agree?

我知道如果我坚持下去就会成功。
I knew if I kept at it I should succeed.

如果我站在你的立场上。
If I were in your shoes.

如果我是你，我就不会担心。
I wouldn't worry about it, if I were you.

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