haddonewhen例句,表语从句例句

had you must be willing to do something you have never done
how divestment happens the inside story from the
学习了过去完成时(had done)1.
伴读牛津树7dd1theportraitproblem中
时的主将从现(运用在从句中)技巧:16615记住连接词if,unless,when