into

prep. 到…里;深入…之中;成为…状况;进入到…之内

The word into is a preposition that expresses movement of something toward or into something else.into是一个介词，表示某物向另一物移动。

In toIn to, on the other hand, is the adverb in followed by the preposition to. They aren't really related and only happen to fall next to each other based on sentence construction. In to，另一方面，是副词in后边跟着一个介词to。它们之间其实没有任何联系，只是句子结构需要让他俩挨到一起了。

小窍门

“Into” usually answers the question “where?” while “in to” is generally short for “in order to.” So look at your sentence and replace “into” or “in to” with “where?” If the second half of your sentence answers it, use “into.” If it doesn’t, replace “where” with “in order to.” If that works, use “in to.”

“Into”通常回答问题“where?“，然而”in to“通常是”in order to“的缩写。所以，你可以看着你的句子，把“in to”或“in to”替换成“where”，如果句子的后半部分恰好能回答这个问题，请使用“into”。否则，请将“where”替换为“in order to”。如果句子意思通顺，就是用“in to”。

比方说：

The tooth fairy put my daughter’s tooth into her pocket.

牙仙把我女儿的牙齿收进了她的口袋。

The tooth fairy put my daughter’s tooth where? Ah—into her pocket.

牙仙把我女儿的牙放到哪-哦，放到口袋里

The tooth fairy came in to collect my daughter’s tooth.

牙仙进来把我女儿的牙收走了。

The tooth fairy came where? -collect my daughter’s tooth? Hmm … that doesn’t work.

The tooth fairy came in order to collect my daughter’s tooth.

牙仙进哪-收我女儿的牙?并不能说通。牙仙进来-为了收走我女儿的牙。