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助动词包括:be (is, am, are, was, were, been, being);
have (has, had, having);
do (does, did);shall (should), will (would)
" be + 动词不定式"可以表示下面几种意思:
1.命令或指示。例如:
No one is to enter the room without permission.
2.计划或安排。例如:
A new bridge is to be built over the river soon.
3.可能。例如:
This kind of tree is to be found in that forest.
4.应该。例如:
Such people are to be criticized.
5.表示后来发生的事,可以用来表示一种命运。例如:
They said good-bye, little knowing that they were never to meet again.
Task:这一期你的`任务一:仔细观察下面三个句子,指出各个句子中的"be+动词不定式"是上面五种意义的那一种。
books are not to be taken out of the reading-room.
expedition is to start in a week's time.
was to regret the decision.
任务二:根据我给出的单词填空.
He ____the meeting, but he fell ill.(用attend填空)
1. Mike, you__1__play with fire. You__1__ burn yourself.
A. won’t; can’t B. mustn’t; may C. don’t have to; must D. have got to; shouldn’t
2. You__2__see the doctor, Joe. You don’t look very well.
A. must B. shall C. may D. can
3. —Must I clean the window now?
—No, you__3__
A. mustn’t B. needn’t C. can’t D. may not
4. Jack’s ill, so they__4__change their plans.
A. must B. should C. have got to D. ought to
5. Harry has been reading all day —he__5__be tired.
A. should B. has got to C. has to D. must
答案:
1-5 BABCD