171 laugh at… 取笑…… eg : Don't langh at others We langhed at the joke

　　172 learn by oneslfe 自学

　　173 learn from sb 向某人学习 eg: We should learn from Lei Feng

　　174 learn to do sth 学做某事

　　175 let sb do sth 让某人做某事

　　176 Let sb down 让某人失望 eg ： We shouldn't let our farents down 我们不应该让我们的父母失望

　　177 live from :离某地远

　　178 live in +大地方 /at +小地方 居住在某地 eg: I live in LuZhou She lives at XuanTan

　　179 look after = take care of 照顾 照看

　　180 lose one's way 谁 迷 路 eg : Lose your way 你迷路