pretendtodo和doing区别是什么？
pretendtodo和doing区别是：
一、意思不同
pretend to do的意思是：假装；假装做；假装做某事。
例句：He pretend as though he have have nothing to do with the case.他装作好像与本案无关。
What did the two cheats pretend to be doing?这两个骗子假装在干什么?
二、强调的内容不同
pretend to do强调的是做某事的动作。pretend to be doing强调的是正在做的状态。
词语用法：
1、pretend的基本意思是“伪装”“假装”，强调明显地表露出是假的。多用作及物动词，可接名词、代词、动词不定式或that从句作宾语，还可接以形容词充当宾语补足语的复合宾语。
2、pretend也可用作不及物动词，常与介词to连用，表示“自称应该享有或自称有才能、学问”等，也可表示“觊觎”。一般用于疑问句或否定句中。
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，并举例说明。
1. pretend to do
含义解释
pretend to do是一个动词短语，pretend意为“假装”，to do表示动作。所以，pretend to do表示“假装做某事”。
语法用法
pretend to do是一个及物动词短语，后面要接动词原形作宾语补足语。它的主语通常是人，表示某人假装去做某事情。
例句
She pretended to be sleeping when I came into the room.
He pretended to know nothing about the incident.
They pretended to be interested in the lecture.
2. doing
含义解释
doing是动名词，它表示一个正在进行的动作或者状态。
语法用法
doing可以作为名词，表示动作或者状态的执行；也可以作为形容词，表示具有正在进行的性质。
例句
She was doing her homework when her friend called her.
He likes doing outdoor sports, such as jogging and hiking.
The children were laughing and doing silly things in the playground.
3. 区别对比
pretend to do和doing的区别在于含义和语法用法。pretend to do指的是假装做某事，表示的是虚假的行为；而doing指的是正在进行的动作或状态，是真实的行为。另外，pretend to do是及物动词短语，有主语和宾语的搭配关系，而doing是动名词，可以作为名词或形容词使用。
下面是更详细的区别对比：
4. 用法举例
pretend to do的用法举例
He pretended to be angry to scare his sister.
She pretended to be interested in her friend's story, but her mind was wandering.
Tony pretended to be a doctor and treated his teddy bear's wound.
doing的用法举例
She loves doing yoga every morning.
The birds were singing and doing their morning exercise in the park.
The workers are doing their best to complete the project on time.
综上所述，pretend to do和doing虽然在表达方式和语法用法上存在差异，但它们都有各自的用途和特点。使用时需要根据具体语境和需要选择适当的表达方式。
