1)协助主要动词构成谓语动词词组的词叫助动词(Auxiliary Verb)。被协助的动词称作主要动词(Main Verb)。
助动词自身没有词义,不可单独使用,例如:
He doesnt like English. 他不喜欢英语。
(doesnt是助动词,无词义;like是主要动词,有词义)
2) 助动词协助主要动词完成以下功用,可以用来:
a. 表示时态,例如:
He is singing. 他在唱歌。
He has got married. 他已结婚。
b. 表示语态,例如:
He was sent to England. 他被派往英国。
c. 构成疑问句,例如:
Do you like college life? 你喜欢大学生活吗?
Did you study English before you came here? 你来这儿之前学过英语吗?
d. 与否定副词not合用,构成否定句,例如:
I dont like him. 我不喜欢他。
e. 加强语气,例如:
Do come to the party tomorrow evening. 明天晚上一定来参加晚会。
He did know that. 他的确知道那件事。
3) 最常用的助动词有:be, have, do, shall, will, should, would
国内英语资讯:CPC issues revised regulation on inspection to strengthen Party supervision
国际英语资讯:Turkey marks anniversary of failed coup with rallies
体坛英语资讯:Five-star Kittel upper in crash-spoiled 11th stage of Tour de France
体坛英语资讯:Spains Muguruza crushes Venus Williams to win Wimbledon title
体坛英语资讯:Atletico Madrid confirm Vitolo signing
川普抵达巴黎讨论反恐参加法国国庆
国际英语资讯:Russia ready to expel U.S. diplomats if no deal struck on Monday: Russian FM
国际英语资讯:U.S.-backed forces control over 42,000 sq. km of Syria after battles with IS
国内英语资讯:China Focus: Financial reform plans unveiled to serve real economy in sustainable manner
体坛英语资讯:Chinese teen divers clinch gold at FINA World Championships
国内英语资讯:Chinese vice premier discusses economic relations with US ministers over phone
国内英语资讯:Boeing 737 MAX 10 receives over 60 orders, commitments from China
国内英语资讯:China to improve integration of health and elderly care
囧囧有神:论说谎你蠢不过他们(组图)
国际英语资讯:Rwandas presidential campaigns officially begin
为什么越来越多女性选择冷冻卵子
体坛英语资讯:Doping athletes, coaches to lose Russian presidential scholarships
国际英语资讯:News Analysis: Iraq needs plan to tackle factions division after IS defeat
还记得毁于ISIS之手的摩苏尔图书馆吗?有人正在努力重建它
中朝贸易2017年上半年出现两位数字涨幅
国内英语资讯:Chinas cabinet to establish commission for financial stability, development
你做出过哪些改变一生的决定?
体坛英语资讯:Brazil football violence claims another victim
The heat is on 忙碌的日子即将开始
国际英语资讯:Britain can still remain in EU, says former British PM Blair
国际英语资讯:Frances Macron honors U.S. forces in Bastille day celebration
体坛英语资讯:Kenyan champ Kiprutos injury worries ahead of London world championships
国际英语资讯:Tehran blasts Trump for describing Iran as a rogue state
国内英语资讯:Chinese consortium acquires Singapore warehouse giant in 12-bln-USD buyout
国内英语资讯:China completes Beijing-Xinjiang desert freeway sections
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |