He was often seen __(walk)along the river after supper.应该填什么
问题描述：
He was often seen __(walk)along the river after supper.应该填什么
答
这个题,其实填walking 和to walk都可以,关键是看说话的人强调的什么填walking强调的是看到他正沿河散步的动作,填to walk强调的是他被看到的结果.但这题其实考核的是感官动词被动语态不定式不能省略to在主动语态中,感...