Unit 12练习题语法知识点回顾：by the time作连词引导时间状语从句，当从句用一般过去时，主句用_______________即结构是___________________；当从句用一般现在时，主句用一般将来时或将来完成时.by the end of + 一般过去时，主句用________________即结构______________________当从句用一般现在时，主句用__________________________________过去完成时的时间状语：① 表示过去某一时间可用by, before等构成的短语。We had finished our homework before 10 o’clock. ② 可能通过when, before，等引导的从句表示。When I got there, the train had left. ③ 过去某一时间通过上下文来表示。 Kate hadn’t studied hard, so she didn’t pass the exam yesterday. 练习：When I came back, my cousins __________________________________（已经离开了）。By the time Tina got up, her father_________________________________(已经进了浴室)。When mother came back, I__________________________________(已经完成了)。By the time I got to the cinema, the movie ___________________________（已经开始了）。When I got outside, _________________________________（雨已经停了）。时态巩固练习By the end of last year, I ___________ (be) to the West Hill Farm three times. So far, I ___________ (be) to the West Hill Farm three times.By the time I got up, Mom _________ (go) out for some exercise.I ______________(learn) 1,000 English words since last term |
