have done doing是啥啊？？

hitananda52

全句是：'You've never done much walking, have you? I don't think you could walk the five miles to our cottage!'。第一句为啥不是You've never walked so much?have done doing是咋回事？

fydy01

没有什么have done doing的结构，这里是do walking（步行）的完成式。“do+动名词”表示“做某事”，是英语中的常见用法，其他如：do reading（读书），do washing（洗衣）等。

elusty

做运动动词用do，习惯用法

entropy

两种写法都可以，注意 do . . . ing 限定词不能省略。
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' H; f4 P* p: Z" N0 V* S& t6 V/ aWe use do in the informal structure do . . . ing to talk about activities that take a certain time, or are repeated (for example jobs and hobbies). There is usually a determiner (e.g. the, my, some, much) before the -ing form.
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# V) L4 x6 U  U/ b" @( p  BI'm going to do some walking . . .
I hate doing the ironing.

, c! @2 V# V) E- ^6 t: F+ x! _Note the -ing form in this structure is noun-like, and cannot have an object.
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8 b3 r7 B9 @! p. n- mNOT: I'm going to doing some watching TV.
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7 _: Y% ^2 U2 o+ }0 Y3 {3 ^But do can be used with a compound noun that includes verb + object.

, j  K; I" K4 x0 ~It's time I did some letter-writing.

, w& R8 I% C7 o% Z5 y7 w% z; l  M* v8 |来源：Practical English Usage

vzx

walking说的是exercise。

hitananda52

多谢各位老师指点