Healthy eating教案
14. something terrible must have happened if li chang was not coming to eat in his restaurant as he always did.
要是李昌不像往常那樣到他店里吃飯，那問題一定嚴重了。
情態動詞+have done
①情態動詞must +have done只用于肯定句中，表示對過去發生的事情或狀態進行肯定的推測，意為“過去一定做過某事”。
②情態動詞can/could可用于否定句中，即can’t have done /couldn’t have done，表示對過去發生的事情或狀態的肯定的推測，意為“過去不可能做過，肯定沒做過某事”。
③此外，can/could have done還可用于疑問句中表示對過去發生的事情或狀態的不太有把握的推測，意為“過去可能做過……嗎?”
注意：表推測的情態動詞只有can/could，常用于疑問句中。
④情態動詞may/might +have done表示對已發生的動作或存在的狀態進行不肯定的推測，might語氣稍弱一點兒，只能用于肯定句和否定句中，意為“過去可能做過某事或過去可能沒做過某事”。
it must have rained last night, for the road is wet.
昨天晚上一定是下雨了，因為路還濕著。
you must have seen the film the gold rush.
你肯定看過電影《淘金熱》。
my sister met him at the theatre last night, so he couldn’t have attended your lecture.
我姐姐昨天晚上在電影院遇見了他，所以他肯定沒參加你的演講。
i can’t find tom anywhere in the office building. where can he have gone?
我在辦公樓的任何地方都找不到湯姆。他有可能去哪里了呢？
you might have read about it in the papers.
你可能在報上已經看過這個消息了。
高手過招
用括號內所給單詞的適當形式填空（原創）
①—where margaret (can; put) the empty bottles?
—she (can; throw) them away. they must be somewhere.
②—hurry up, michael! it’s ten to three.
—goodness me! the class (must; begin).
i’ll be late again.
答案:①can; have put; cant have thrown ②must have begun
15. he could not have yong hui getting away with telling people lies! 他可不能讓永慧哄騙人們后跑掉。
have sb./sth. doing sth.讓某人/某事一直做某事，表示一個持續的動作。用于否定句中表示不允許某人做某事。
he had me waiting for him for two hours. i can’t bear it any more!
他讓我等了兩個小時，我再也無法忍受了！
it’s rude of you to speak to father like that and i won’t have you speaking to father like that in future.
你那樣跟父親說話很粗魯，今后我不會再容忍你那樣跟父親說話了。
won’t have sb./sth. doing sth.不能容忍某人做某事/容忍某物
have sb./sth. do sth. 使某人或某物做某事(注意不要在do之前加上to)
have sb./sth. done sth. 請別人做某事(自己不去做或無法做); (主語)遭受了不好的事情