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1.teenagers should be allowed to practice their hobbies as m

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1.teenagers should be allowed to practice their hobbies as much as they want
2. his parents won't allow him to train as much as he would like to
为什么上句话中后面没有to 而第二句后面有啊
1.teenagers should be allowed to practice their hobbies as m
1.would like to do sth中如果后面的(行为动词构成的)动词结构在前面出现过,则经常可以省略(但要保留to)
2.而as sb like/wish/want等结构中,则一般不会保留to.
再如:Buy everything as you want.你想买什么,就都买吧.
这些都是固定用法,用多见多就习惯了,建议楼主不必深究.
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