1、主语S+V 作主语的词：词组、句子、代词、名词1. 名词作主语直到河里的鱼死了，村民们才意识到污染的危害。The villagers didnt realize how serious the pollution was until the fish in the river died.S+ V t +O. 主系表结构 :S+V倒装：Not until the fish in the river died did the villagers realize how serious the pollution was.注意：倒装在主句，从句不倒装 /did 和 not 提前，只剩动词原形强调：I
2、t was not until the fish died in the river that the villagers realized how serious the pollution was.如果强调的是主语或宾语且指人用 who，其他一律用 that。注意：是 that，而非其他/主句的顺序（倒装不强调，强调就不倒装） ）2.代词作主语- 人称代词（主格） ，名词性代词，指示代词，不定代词， such（-样的人、物） ，it （时间，天气，距离等）at midnight /in the(泛指）middle of the night1) Such is my brother, kin
3、d, clever, and handsome.Such is the result.2) It is 9 oclock when I went home.It was ten when I got home.一般句It was at ten that I got home.强调句I got home at ten.原形注意：It was at ten (when I got home) that the accident happened.3.数词作主语Three is enough. Three days is too long a time.Ten out of 100 American
4、s are over /above /more than 65.4.动名词作主语一般 / 完成时1.v-ing: 主动/doing/having donenot doing:被动/being done/having done注意：doing 无时间限定/与谓语同时出现 /在谓语动词后发生having done 发生在谓语之前He regrets having wasted a lot of time.He still remembers being prized.例如 remember/forget/regret/excuse/thank/apologies 之后换用以上用法a.形容词性物主代
5、词 /n-v_ingb.人称（宾格）/n-v_ing当逻辑主语为无生命的东西时，常用 a。a.作主语时，通常表示一般性的无时间性的东西。而不定式表示某一种具体的动作。Smoking is hobbit difficult to break.According to the author, imagining the future, will serve the interests of the present and the future generations.b.主语和表语一致Seeing is believing.c.逻辑主语必须是所有格形式Marys failing in NMET m
6、ade her parents unhappy.My smoking does harm to all.Smoking kills./英国香烟：吸烟有害健康d. it 作形式主语It is no use/good-What do you think made Tom so upset?-Losing his bike.例句：The old mans taking pity on the snake leads to his death.那个老头怜悯那条蛇，导致他的死亡。My not ding homework made the teacher angry.Your not working ha
7、rd will make your parents sad.5.不定式作主语To +动词原形Not to do 解释：具有动词的性质，作宾语，状语/ 具有名词的性质，作主语 /具有形容词性质，作定语/具有副词的性质，作状语。除谓语不可作之外，其他都可。一般式：to do 进行时：to be doing 完成时：to have done 完成进行时：to have been doingto do:表示动作发生在谓语之后，I want to go home.与谓语动词几乎同时发生to be doing :表示与谓语动词同时发生to have done:发生在谓语动词之前 Someone was c
8、onsidered to have done something.to have been doing :动作从过去开始一直持续到谓语动词这个动作的发生：例Tom was said to have been living in Beijing for 8 years.（of 指人的属性，for 指不定式的属性）不定式表示一种确定的动作To do morning exercises this morning is not good for your healthy.注释：作主语在句首/it 作主语构成（常用 v-ing，不常用只有 use，good）It is +adj. +of sb.(人的属
9、性）/for sb.（物的属性）to do It is necessary to finish the design before National day. Tomorrow is National day.it is +n.+for/of sb. to doIt is not good manners for Arabs to stand close talking to their friends.It is a great honor for us to be invited to the party.在感叹句中必须用 it 作形式主语：What a joy/ pleasure (it
10、 is) to read the book.在问句中必须用形式主语：Is it possible to go to the moon by spaceship?It takes sb. sometime to do something. (不得不花的，不是主语的主观意志）而 sb. spend some time (in) doing sth. (主语为主观意志）理解真正含义，作到用词恰当，表意准确！6.名词化的形容词或过去分词1) the poor / the disabled /the sick7.名词化的介词短语From my home to school is three kilome
11、ters. (最好不用）It is 3 kilometers form my home to school.Honesty（being honest) is a good manner. (形容词怎么作了主语？）It is comfortable for us to sit in our classroom.副词-不定式或动名词注意常出错的地方：主语/动词/ 形容词/介词短语 怎样作主语Being exposed in nuclear radiation even for a short time may hurt you.It is right for you not to study ha
12、rd.Since (when/now that) it took so much money to come to school.Being burnt in the sun will make your skin black.Getting up early is thought to be /considered of a good hobbit.His coming here is helpful/a great help.It is very hard to ride a motorbike on snowy days/on a snowy day.Your failing the e
13、xam will disappoint your parents.It is very pleased for me to meet you here.Meeting you here pleased me very much.It is pleasure to meet you here.How exciting to find a shark when swimming in the sea.What an excitement to find a shark when youre swimming in the sea.8.句子作主语（从句一律为陈述句）1） that 引导的从句，无意义
14、，不担当句子成分，不省略A. It +v+ that 从句1.It +系动词+表语 +that 从句It is clear that the driver couldnt control the car.It is strange that he didnt come here yesterday.当形容词为 important necessary strange /that should +动词原形It is necessary that we should learn English well.It is strange that he should （表示吃惊）pass the exam
15、.2. It is +n +that 从句It is a pity that you didnt come to this party.What a pity it is that you didnt come to this party.当名词为 a pity/a shame /a surprise +should +v 原形（表示竟然）What a pity that she should be fail in exam.3. It is +过去分词+that 从句It is report that a car accident happened there.从句 s +be v-ed +
16、 inf.A car accident is reported to have happened.It is said that he was studying in the USA.He is said to be studying in the USA.有人建议 suggest/order/request + 从句 should +动词原形4. It +动词原形 seem/appear /turn out/+that It seems that it will rain.It turns out that their experiments were successful.It turns
17、 out that their experiment was a success.It happened that I wasnt in that day.5. It strikes sb. that 从句 ，某人突然想起It occurs to sb. that- It struck that I left my book in my bed room.It occurred to me that -B.为强调从句意义，that 从句常放在句首That he will come here is of great help.That you failed the exam will -What
18、 made his father so angry?-That he failed the exam. 或 He fails the exam.c.在问句中必须有形式主语It is true that Bush will visit China again?2) Whether /if 是否不担当句子成分，也不省略A.句首只用 whetherWhether he will come to the meeting is unknown yet.B.句末形式主语都可用It -whether/if It is important whether/if you can report the accid
19、ent.It is of no/little important whether/if it will rain today.c.在有些句型中，从句不在前It doesnt matter whether -It makes the thing difference whether he will come.It doesnt matter whether it is new/it will rain tomorrow.3) 连接代词 who /whom/whose/what/which/担当从句成分，有意义，不省略A. what +sb. + clauseWhat we will do nex
20、t is not decided.B. what+修饰词 意为什么样的What color you like is none of my business.C. what 人， 事，物What he said at the meeting surprised everyone present.注意：what 前是否有先行词/与 that 之间的区别That he said it at the meeting surprised everyone present.What 与 which 的区别Which/what you want-若给定范围用 which，没有用 what。What -be
21、that-强调句的一种（强调后者）What I need most is that someone helps me.What imprested me deeply is/was that I won the fist place, but it was very quite in classroom.There be +what clauseThere was we call Peoples Republic of China in Chinese history.What +比较级 what more /what worsewhat 引导从句作状语修饰全句的内容。在句首或句中，很少在句尾
22、Which +n (single)Whose +n(只用此）Whose father is a doctor is no sense.It 从句作形式主语（what人或物时，不用 it）4）连接副词 when/whose/how/why 担当句子成分，有意义，不省略How the accident happened puzzled everyone.句尾用形式主语 itIt is puzzled everyone how the accident happened.5) 引导主语从句 whoever/whosever/whatever/whichever/Anywhere/anything t
23、hat /everyone that/whoever=anyone whom/anything that (泛指)/anything what (特指)Whoever told you the news was lying to you.Whoever 指人从意义判断Who 引导指事 It is not decided who will come to the meeting.Please give this book to whoever /whomever（书面语）you meet in the bookstore.此种情况不能用 it 作形式主语Since the introduction of reform, China has made earth shaking changes.自从改革以来，中国发生了翻天覆地的变化。
