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Howareyougoingtodothat?里的that必须有,还是可以省略,还是一定不能有?问:whatareyougoingtobewhenyougrowup?答:I'mgoingtobeacomputerprogrammer.问:Howareyougoingtodo(that)?为什么加that,是必须的吗?

题目详情
How are you going to do that?里的that必须有,还是可以省略,还是一定不能有?
问:what are you going to be when you grow up?
答:I'm going to be a computer programmer.
问:How are you going to do ( that )?
为什么加that,是必须的吗?
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答案和解析
that是指代上面的 to be a computer programmer,可有可没有.