is和does的区别举例说明he is doing his homework.就这个句子来说改为一般疑问句用does还是is.does is都用于现在进行时吗

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is和does的区别举例说明heisdoinghishomework.就这个句子来说改为一般疑问句用does还是is.doesis都用于现在进行时吗is和does的区别举例说明heisdoinghis

is和does的区别举例说明he is doing his homework.就这个句子来说改为一般疑问句用does还是is.does is都用于现在进行时吗
is和does的区别举例说明
he is doing his homework.就这个句子来说改为一般疑问句用does还是is.does is都用于现在进行时吗

is和does的区别举例说明he is doing his homework.就这个句子来说改为一般疑问句用does还是is.does is都用于现在进行时吗
is 用于现在进行时,does 一般现在时的 助动词的单数形式 该为 is he do his homework 望采纳
举例,现在进行时:he is doing his homework now
does: does he do his homework

is是系动词,后面一般加doing sth,但does后加动词原形。

is是be动词,does是助动词