why not ,how about what about 后面是用动词Ing形式还是用原型

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whynot,howaboutwhatabout后面是用动词Ing形式还是用原型whynot,howaboutwhatabout后面是用动词Ing形式还是用原型whynot,howaboutwhata

why not ,how about what about 后面是用动词Ing形式还是用原型
why not ,how about what about 后面是用动词Ing形式还是用原型

why not ,how about what about 后面是用动词Ing形式还是用原型
why not do sth
how about doing sth
what about doing sth
about 是介词,后面加动名词形式