英语专业四级辅导：词汇与语法全真模拟练习32

会计考友

从今天开始我们要专攻助动词。好啦，现在大家先来回忆一下助动词有哪一些？
　　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.
, }+ |: K$ W- h4 e2 M, a1 N　　2.计划或安排。例如：
　　A new bridge is to be built over the river soon.
　　3.可能。例如：
& G; F& N7 s' }$ o　　This kind of tree is to be found in that forest.
. o; @  d( S" d2 j& L　　4.应该。例如：
6 D# i! b* a7 N: Q' M; I　　Such people are to be criticized.
# M, j5 ^5 z3 g$ Q0 I8 U& e! m　　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.
0 |9 \& S7 b; P* x0 N　　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。
　　1.The books are not to be taken out of the reading-room.
( P: H' ?) ~8 S; c& Z/ ~! `　　2.The expedition is to start in a week’s time.
　　3.He was to regret the decision.