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.
/ @0 W8 {: f* ?　　2.计划或安排。例如：
　　A new bridge is to be built over the river soon.
& J* b# a' B" U: I9 n" n6 u* w　　3.可能。例如：
% x' n7 D0 j- _: @8 D　　This kind of tree is to be found in that forest.
' q3 `. w: r$ r+ B: V; ?$ X　　4.应该。例如：
6 |* }5 a$ q* [　　Such people are to be criticized.
% f9 F1 Z% I$ c- x+ [5 D+ n8 h* S3 Z  I　　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.
- U7 J4 N( U. [) _) q$ w* R/ a　　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。
! b/ O. S4 o4 d. X2 ^　　1.The books are not to be taken out of the reading-room.
( h( w' E" ]8 ~7 A  M- }4 o/ ^5 h　　2.The expedition is to start in a week’s time.
' ]# |0 m5 E& N0 r　　3.He was to regret the decision.