英语专业四级词汇与语法全真模拟练习三十二

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？
& y; H6 y( X/ c# R1 J$ a* e5 d3 T　　助动词包括：be (is, am, are, was, were, been, being)；have (has, had, having)；do (does, did)；shall (should), will (would)
4 N# h) E" T3 N, n  u! i　　" 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：
2 D( c" W  c3 K' z　　A new bridge is to be built over the river soon.
　　3.可能。例如：
/ r; m# s, A6 M/ D　　This kind of tree is to be found in that forest.
　　4.应该。例如：
' V' a4 K# _2 Q  D" {　　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。
　　1.The books are not to be taken out of the reading-room.
　　2.The expedition is to start in a week’s time.
7 F$ c8 B2 L" J　　3.He was to regret the decision.