1.在老师进入教室前, 李磊擦了黑 板. LiLei ___h_a_d__c_le_a_n_e_d__ (clean) the blackboard before the teacher came into the classroom.
2. 当我们到那儿时火车已经离开了。
The train __h_a_d__le_f_t __ (leave) when we arrived there.
bring___h_ad__b_ro_u_g_h_t_____ open___h_a_d_o_p_e_n_e_d_____
When I got to school, I realized I __h_ad__le_ft my backpack at home.
Millie ran back to school because she had left her magazine in the classroom.
What happened first?
a. Millie ran back to school.
b. Millie left her magazine in the classroom.
Simon left school late because the football game had started late.
构成：
主语+had + 动词的过去分词 (p.p.k about an action that happened before another action in the past.
强调过去某一个动作发生在
另一个动作前常常用过去完成时态。也就是说 发生在“过去的过去”。
过去完成时态的用法：
1. 常由by或before, when引导的短语或从句做时 间状语或时间状语从句
by 到……时候为止 by the end of last week 到上周末为止 by that time 到那时为止 before that year 那年之前 before I arrived 在我到达之前
What happened first?
a. Simon left school late. b. The football game started late.
Daniel arrived out of breath – he had gone to the wrong cinema.
What happened first?
watched TV?
肯定回答： Yes, he had.
否定回答： No, he hadn’t.
Do the exercise
写出下列动词的过去完成时形式
be ____h_a_d_b_e_e_n_______ see____h_a_d_s_e_e_n_______
begin __h_a_d_b_e_g_u_n______ sing___h_a_d__s_u_n_g_______
b. Amy went to the police station.
• 1. She had written a number of books _____ the end of
last year.
①By the end of last year, I had learned about one
thousand English words. ②When I got there, they had already left.
2、常用在宾语从句中 ① He told me he had already finished his homework. ② I realized he had fooled me again 3、体现在上下文中 I didn’t go to the movies yesterday because I had seen it twice.
a. Daniel arrived out of breath.
b. Daniel went to the wrong cinema.
Amy had lost her purse and had to go to the police station.
What happened first?
a. Amy lost her purse.
6:00
7:00
现在
By the time I got up, my sister had already washed all the clothes.
By the time my mom came back home, I had cleaned up the yard.
My little brother went to bed
8:00pm
9:00pm
now
I got home
By the time I got home, my little brother had gone to bed.
The teacher came into the classroom
8:00am
8:15
I got to school
now
By the time I got to school, the teacher had come into the classroom
By the time she got outside, the bus had already left.
过去完成时的否定形式：
主语＋had not／hadn’t+ p.p.+其它.
过去完成时的疑问形式：
Had+主语＋p.p.+其它?
肯定回答： Yes,主语+had. 否定回答： No,主语+had + not.
按要求改写下列句子．
Simon had finished his homework before he watched TV. 否定句：Sheimwoantchhaeddn’TtVf.inished his homework before
疑问句：Had Simon finished his homework before he