AS a teahcer ,i always tell my studens ( ) hard and keep up from day one .空里面是填to work,为什么不可以填work

问题描述:

AS a teahcer ,i always tell my studens ( ) hard and keep up from day one .空里面是填to work,
为什么不可以填work

tell sb to do sth 吩咐某人做什么
这里得用to do 不定式做宾补

tell sb to do sth
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tell sb to do sth,,

tell sb. to do sth. 告诉某人做某事

tell sb.to do sth.这是其一;其实最重要的问题是你直接填了work一个句子中就会出现两个动词了.英语中一句话中只允许有一个动词.所以后面是work的不定式:to work