九年级英语全册 Unit 12 Life is full of the unexpected(第1课时)习题课件

he_h_a_d__s_ta_y_e_d_u__p all night _f_r_ie_n_d__h_a_d_f_o_o_l_ed__h_i_m
studying for a math test.
What did we learn?
Result
Who
April Fool’s Days
What happened?
人教新目标版《初中英语》九年级
非常感谢收看
教学课件
Result
Dave A friend invited him to_a__ He found that his
c_o_s_t_u_m_e__p_a_r_t_y__. He was frienhda_d__fo_o_l_e_d__ him.
the only person_w_e_a_r_in__g_a_ He was really
When did it happen?
What happened?
Last week
My English teacher’s friend put a piece of paper on her back that said “ Who am I ?”
What’s the result of the joke? When she realized, all the students had known it. She was very embarrassed.
1. Do Ex.on P151 in the workbook. 2. Preview the next period:
1) Remember some new words and phrases.
2) Read 2b and fill in the chart on P106 in the workbook.

Life is full of the unexpected完成时；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 time he was ten, Tom built a chemistry lab himself. 等到了十岁的时候，汤姆自己建了一个化学实验室。

I’ll be in bed by the time you get home. 你到家时，我已经上床睡觉了。

过去完成时(一):1.概念：过去完成时态表示在过去某一时间以前已经发生了的动作，即发生在“过去的过去”。

2.构成：过去完成时由“助动词had（通用于各种人称和数）+过去分词构成。

3.用法：过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作。

主要表示过去某时前已发生的动作或情况（也可说是“过去的过去”）。

与by、before等构成的短语连用4.陈述句：主语+助动词had (通用于各种人称和数)＋过去分词They在他们到达旅馆之前，他们已经吃早饭了。

从句中arrived at到达在“过去”的时间，而had already had吃早饭的动作发生在到达之前，因此主句的时态为“过去的过去”。

5.否定句：主语+助动词had (通用于各种人称和数)+not＋过去分词他说他以前从来没有看过这样美丽的鸟。

6.疑问句助动词had (通用于各种人称和数)+主语＋过去分词？到上学期期末为止，你们看了多少部英文片？到十点以前，你们已经到达火车站了吗？注：如果时间状语从句的动作发生在前，则从句用过去完成时，主句用一般过去时。

如：When巧学过去完成时过去完成时态不算难，形式要向完成时态看。

Have变成had不怠慢，断定过去之前是关键。

【提示】过去完成时是一个相对的时态，表示的是“过去的过去”，只有在和过去某时或某动作相比较时才用到它，因此当原句中若找不到一个“过去的时间”作为参照点时，是不能用过去完成时的。

【例句】He got to the railway station and suddenly realized that he had forgotten to bring his ticket.他到了火车站后忽然意识到他竟忘记带车票了。