pretend to do与doing的区别主要在于意义和语法用法。 pretend to do意为“假装做某事”，而doing是动名词，表示动作或者状态的进行。 下面将分别解释它们的含义和用法，并举例说 …
“Pretend to do” is the correct form as one needs the infinitive form of the verb after pretend (to do, to be, to run, to jump, etc.)
[prɪˈtɛnd ] transitive verb. to pretend to do sth/pretend that… (make believe) 假装做某事/假装⋯ [jiǎzhuāng zuò mǒushì/jiǎzhuāng…] The children were …
"pretend to be doing" is a valid and usable phrase in written English. You can use it when describing activities or tasks that one is pretending to do, or when …
该结构有如下三种形式：pretend to do sth(一般式);prentend to be doing sth(进行式);prentnd to have done sth(完成式) 如：I pretend to be sleeping when my …
更多内容请点击：pretend三种易混淆不定式的用法 - 白话文