#V粉语法营#基础语法一点通：

代替if字句的用法

a、不定词 to v

If you heard him talk, you would think he knew all about the secret.

To hear him talk, you would think he knew all about the secret.

b、副词连接词/副词片语

If I didn`t know he was innocent, I wouldn`t try to save him.

= I know he is innocent; otherwise I wouldn`t try to save him.

If we hadn`t hidden in the forest, they would have found us.

=We hid in the forest; otherwise they would have found us.

If you had a little patience, you could get over your difficulty.

With a little patience, you could get over your difficulty.

If it had been ten years ago, I could have run around this lake within half an hour.

ten years ago, I could have run around this lake within half an hour.

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