If you don't you will forget them quickly ,Only knowledge that is used sticks in your mind.开头两个you怎么回事?大大给我讲讲!

If you don't you will forget them quickly ,Only knowledge that is used sticks in your mind.开头两个you怎么回事?大大给我讲讲!
If you don't you will forget them quickly ,Only knowledge that is used sticks in your mind.
开头两个you怎么回事?大大给我讲讲!

If you don't you will forget them quickly ,Only knowledge that is used sticks in your mind.开头两个you怎么回事?大大给我讲讲!
我感觉哈,这个句子应该是If you don't,you will ……这样子断下句子,你就能够读明白了.

If you don't 之后省略了宾语。所以说按照此话之前是有文章的。
If you don't （假设：contact them），如过你不联系他们，很快会忘记他们的。

If you don't you will forget them quickly ,Only knowledge that is used sticks in your mind.
这个句子是文章中的摘出来的一句话吧。
要读懂一句话，你不一定要懂得它的每个单词的意思。可以根据上下文、句式、时态、常识等来猜测、判断句意。
If you don't you will。。。。这...

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If you don't you will forget them quickly ,Only knowledge that is used sticks in your mind.
这个句子是文章中的摘出来的一句话吧。
要读懂一句话，你不一定要懂得它的每个单词的意思。可以根据上下文、句式、时态、常识等来猜测、判断句意。
If you don't you will。。。。这是一个条件句。翻阅语法书可得，就不多讲了。
不懂得这个句式也可以利用上下文来判断句意。
这句话之前的话讲到的意思一定是：“你可以（或应该）怎么怎么做”，然后接下来是:“如果你不这样做，你就会怎么怎么样”也就是“If you don't you will 。。。。”

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