内容正文:
人教版高中英语选修二 Unit5 First aid单元语法归纳
重点 动词-ing 形式
动词-ing 形式分为现在分词和动名词。现在分词兼有动词、副词和形容词的特征,动名词兼有动词和名词的特征,两者都可以接宾语或被状语修饰。
一、动词-ing 形式的基本形式
动词-ing 形式的否定形式是在其前加 not。动词-ing 形式有时态和语态的变化
主动式 被动式
一般式 doing being done
完成式 having done having been done
二、动词-ing 形式的句法功能
① 动名词作主语,多表示一般或抽象的重复多次的行为。有时用 it 作形式主语,将作主语的动名词(短语)后置,常见句型有:it is a waste of time doing...、it is no use/useless/no good doing...。
● As you can imagine, getting burnt can lead to very serious injuries.
● It's no use arguing with him. 和他争论是无用的。
【特别注意】 单个动名词作主语,谓语动词一般用单数;由 and 连接的并列动名词作主语时,如果强调一个整体,谓语动词用单数,如果强调不同的事物,谓语动词则用复数。
● Sitting and talking to old friends is a pleasant way to spend an evening.
● Climbing and fishing are his favourites.
② 动名词作宾语
(1)常接动名词作宾语的动词有:mind、suggest、enjoy、admit、appreciate、avoid、delay、dislike、escape、finish、imagine、keep、miss、practise、resist、risk、deny、consider 等。
● I suggest doing it in a different way.
(2)常接动名词作宾语的短语有:be devoted to、feel like、look forward to、insist on、think of、dream of、object to、be engaged in、depend on、aim at、set about、be/get used to、be fond of、be afraid of、be tired of、succeed in、be interested in 等。
● If you insist on leaving now, please go ahead.
(3)动名词在介词(but、except 除外)后作宾语。
● You can protect the burnt area by covering it with a loose clean cloth.
【特别注意】 forget、mean、regret、remember、try 等词后可接动名词或不定式作宾语,但意义上有区别。
● I remember doing the exercise.
● I must remember to keep good records.
③ 动词-ing 形式作表语
(1)动名词作表语,表示抽象概念的动作,这种动作未必正在进行。
● Seeing is believing.
(2)现在分词作表语,表示主语的性质或特征,意为“令人……的”。
● The news is inspiring.
④ 动词-ing 形式作定语
(1)动名词作前置定语,表示用途或性质。
● The reading room is large and bright.
(2)单个的现在分词作前置定语往往有形容词的性质,也表示主动和进行;现在分词短语作后置定语时,往往表示正在发生或与谓语动作同时发生的动作,其作用相当于一个定语从句。
• It is best to place burns under cool running water, especially within the first ten minutes.
• I found a sleeping baby on the bed.
• The man standing by the window (= who is standing by the window) is our teacher.
【特别注意】 动词-ing形式的被动式、动词-ed形式和不定式的被动式作定语之间的区别
→表被动和进行
• The building being built now is our new school. 现在在建的大楼是我们的新学校。
→表被动和完成
• The building built three years ago is in ruins. 三年前建的那座大楼已成废墟。
→表被动和将来
• The building to be built next year will be excellent. 明年要建的那座大楼会非常棒。
⑤ 现在分词作状语时,分词的逻辑主语通常和句子的主语一致,且分词表示的动作与句子主语之间是逻辑上的主动关系。作状语时,现在分词可以表示时间、原因、结果、条件、让步、方式、伴随情况等,相当于一个状语从句。注意:当现在分词作结果状语时,其逻辑主语既可以是句子的主语,也可以是前面整句话的内容。
• ... in 1974, an American doctor, Henry Heimlich, created the Heimlich manoeuvre, saving thousands of lives around the world. ……美国医生亨利·海姆利希于1974年发明了“海姆利希手法”,挽救了世界上成千上万个生命。[教材原句P56]
• The children ran out of the room, laughing and talking merrily.
• Having studied about 600 clinical cases, the scientist found a cure for the disease.
• Hearing their teacher's voice, the pupils stopped talking at once. = When they heard their teacher's voice, the pupils stopped talking at once.
• Not knowing how to work out the difficult physics problem, he asked the teacher for help.
• Working hard, you'll succeed.
【特别注意】 有些惯用的现在分词形式在句中可以没有逻辑上的主语而独立存在,作评注性状语,表明说话者的态度、观点等。常见的有:
generally speaking 一般说来
strictly speaking 严格说来
frankly/honestly speaking 坦白地/老实说
judging from/by... 根据……判断
taking... into consideration 考虑到……
• Judging by the look on his face, I was in really bad shape.
⑥ 现在分词作宾语补足语时,宾语往往是其逻辑主语,分词与宾语之间存在逻辑上的主动关系,表示一个正在进行的主动性的动作,强调一个过程或一种状态。
• Remove any clothes using scissors if necessary, unless you see the fabric sticking to the burnt skin. 如有必要,用剪刀把衣服剪掉,除非你看到织物粘在烧伤的皮肤上。[教材原句P51]
• They use computers to keep the traffic running smoothly.
(1)当转换为被动结构时,原来作宾语补足语的现在分词便转换为主语补足语。
• A student will be punished if he or she is found cheating in an exam.
(2)能用现在分词作宾语补足语的几类动词(短语):
①表示感觉或心理状态的动词,常见的有see、hear、feel、smell、find、notice、observe、look at、listen to等。
● Listening to music at home is one thing, while going to hear it being performed live is quite another.
②表示指使意义的使役动词,常见的有have、get、set、keep、leave等。
● I won't have you running about in the room.
【特别注意】 see、hear、feel、watch等感官动词后,用现在分词作宾语补足语强调动作正在进行,用动词不定式作宾语补足语强调动作的全过程,主动语态中要省去不定式符号to。
● We heard the telephone ringing. 我们听见电话正在响。
● We heard the telephone ring. 我们听见电话响了。
三、动名词的复合结构
动名词的复合结构可在句中充当主语、宾语、表语等,此时动名词短语有自己的逻辑主语。
常见的动名词复合结构的构成:
形容词性物主代词/宾格代词/名词所有格/名词普通格+ doing/being done
● Her not being brought up on a farm caused her to become curious about nature.
● They don't like me/my coming here.
● Drivers' being absorbed in music is a cause of many traffic accidents.
学科网(北京)股份有限公司
$