you should open the window to let in the clean air.let in
人气:117 ℃ 时间:2020-01-27 19:19:10
解答
是的,是固定用法 let in sth.容许; 加进; 让…进入; 如:A tiny opening will let in a gust of wind. 针尖大的洞,也会刮进斗大的风. 句意:你应该把窗子打开,让清新的空气进来.parents usually let their children choose their own job.这句中choose前是不是省略了to .也是固定用法吗?就像make sb do sth.是的,let sb.do sth.是固定用法