Question

in the back of是不是等于behind?

Answer 1

要看语境，如果是相关位置，那可以和 behind 通用。
比如：He was standing (in the back of) the car. 这里就可用 behind 替代。
但是：He wrote down his name in the back of the book. 这样的句子就不行。
或问，为何不是 on the back of the book 呢？有何区别？
因为，书有封面、封底之分，又有内外之别。

Answer 2

behind= in back of

in the back of是在...后面一部分

比如 The teacher stand in the back of the classroom
There are many trees in back of= behind the classroom.

Answer 3

您好：
是的哦。意思都是：在xx后面。

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