when is he going on vacation为什么用on vacation,难道是正在度假中吗?

when is he going on vacation为什么用on vacation,难道是正在度假中吗? He is going to tell you when the film is on这句话对吗 when is he going to marry对吗? where is she going when is he going to do?where is she going when is he going to do? He is going on with his work. when he grows up,he is going to do what. 翻译 when he is going home,he sees a farmer. He is very careful when he is-----(on,at)work When is Amy going to have he party? He is going hiking on Sunday还是He is going hiking Sunday? He is going on a big trip.变一般疑问句. is he a going trip around on england He is going on a big trip.变一般疑问句. he is going to the movies on Friday. He says he is going to be a scientist when he up .填什么? When is he going to have a picnic?那个错了when going to is 那个错了 he is going to come now改变成含有when的特殊疑问句怎么改?when. what is he going to do when he（）（grow）up填什么急急!