一同过专四吧！(26)
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"可以默示下面几种意思:
1.饬令或指示。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.年夜概。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.默示厥后发作的事，可以用来默示一种命运。例如：
They said good-bye, little knowing that they were never to meet again.
Task:这一期你的义务一:细致考察下面三个句子,指出各个句子中的＂be+动词不定式＂是下面五种意义的那一种。
1.The books are not to be taken out of the reading-room.
2.The expedition is to start in a week's time.
3.He was to regret the decision.
义务二:根据我给出的单词填空.
He ____the meeting, but he fell ill.(用attend填空)
谜底：
1.饬令或指示。
2.计划或安排.
3.默示厥后发作的事，可以用来默示一种命运。
4.was to have attended
was (were) +不定式完成式
这种构造默示“正本计划…，正本要…（而功效则没做）”。例如：
He was to have attended the meeting, but he fell ill.
他正本要加入集会的，可是抱病了。（因此没加入）

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