语法专项提升 介词和介词短语表进行意义的四类介词短语(1)at+名词He was at dinner when I came
我来时他正在吃饭
She stayed at work when everybody else had gone home
别人都回家了,她却还在工作
类似的还有:at work 在办公 at play 在玩耍at lunch 在吃中饭 at rest 在休息at table 在吃饭 at school 在上学at church 在做礼拜 at peace 和平时期at press 正在排印有些结构可能带有冠词或物主代词:at one’s meals 在吃饭at one’s study 在学习at the piano 在弹钢琴at the end (of)在结束时at the desk 在读书(2)in+名词He is in the army
He’s been in politics all his life
Her husband was in business
她丈夫是经商的
He looks tired
He is in need of a rest
他看起来很累了,需要休息一会儿
类似的还有:in action 在运转 in progress 在进行1in operation 在运行中有些结构可能带有冠词:in the course of 在……过程中in the act of 正在做……时(3)on+名词Are you here on business or for pleasure
你是来办事还是来玩
The typist is away on holiday this week
打字员本周休假
The man on watch didn’