用at dusk造句

用at dusk造句 Sun at dusk dusk前什么时候用at,什么时候用on Imperceptibly play at dusk.这句话怎么变过去时? i like to see the sun ___(sink) at dusk dusk ,dawn的介词分别用什么? 用stay at 造句 用at first造句 用 look at 造句 用'at last'造句 用at present造句, 用“at first”造句, 用'at once造句, 用at times造句 用at hand造句 用at present 造句 用at present造句 英语造句 用at last造句用at last造句