Unit 12 Life is full of the unexpected.Grammar Focus 4c— 单元同步语法精讲精练过去完成时 1．概念 过去完成时表示在过去的某一时间或动作之前已经发生或完成了的动作，它表示动作发生的时间是过去的过去。 2．结构 (1)肯定句：主语＋had＋过去分词＋其他． (2)否定句：主语＋had not＋过去分词＋其他． (3)一般疑问句：Had＋主语＋过去分词＋其他？ 3 ．用法归纳(1) 常与 before ， by ， by the time ， by the end of 等引导的时间状语 ( 从句 ) 连用。状语从句的谓语动词常用一般过去式。如：By the time/Before I came to this school ， I had learned English. 在来这个学校之前，我已经在学英语了。(2) 表示从过去某一时间开始，持续到过去另一时间的动作或状态，与“ for”＋时间段 连用，谓语动词用延续性动词。如：He had been ill for a week when he told me. 当他告诉我时，他已经病了一周了。(3) 主句谓语动词为一般过去时 ( 如 said ， asked ， found ， told ， thought 等 ) ，其后的宾语从句通常用过去完成时。如：Mr.Zhang said that he had lived in this city for ten years. 张先生说他已经在这个城市住了十年。一、单项选择。1 ．— What good luck we had ！ The rain had stopped _____the time the match began.—You were lucky.Showers usually come and go fast.A ． at B ． since C ． for D ． by2 ． When he was in the shop ， he found he ______his wallet.A ． lost B ． has lostC ． had lost D ． would lose3 ．— Did you see Mrs.Lee in the meeting room?—No.When I got there ， she ______another meeting.A ． had left for B ． had left toC ． was leaving for D ． was leaving toDC A 4 ．— Were you still doing your homework at that time?—No ， I had already finished it _____ ．A ． in two hours B ． two hours agoC ． before two hours D ． two hours before5 ． Had your parents been to quite a few countries ____2014?A ． at the end B ． in the end ofC ． by the end of D ． at the e...
