高二一年,强人将浮出水面,鸟人将沉入海底。 高二重点解决三个问题:一,吃透课本;二，找寻适合自己的学习方法;三，总结自己考试技巧，形成习惯。以下是小编给大家整理的高二英语必修四总知识点概括，希望能帮助到你!
Worried about the journey, I was unsettled for the first few days.
Well-known for their expertise, his parents’ company …..
Confused by the new surroundings, I was hit by the lack of fresh air.
Exhausted, I slid into the bed and fell fast asleep.
过去分词作状语：过去分词作状语时，说明动作发生的背景或情况，其等同于一个状语从句。vt 过去分词作状语时与主句主语构成被动关系，表示被动和完成，vi 过去分词表示状态或动作的完成。
Heated , water changes into steam .
The professor came in, followed by a group of young people .
1 作原因状语，等于as / since / because 引导从句
Moved by what she said ,we couldn’t help crying . = ( As we are moved by what she said …
2 作时间状语，等于when 引导时间从句，如果分词表示的动作与谓语的动作同时发生，可在分词前加when/ while / until 等使时间意义更明确。
When heated , water can be changed into steam .
Seen from the hill ,the park looks very beautiful .= ( When the park is seen from the hill…
3 作条件状语等于 if / whether 引导从句
Given more attention , the cabbages could have grown better .= ( If they have been given more attention ….
Compared with you , we still have a long way to go = ( If we are compared with you …
4 作方式或伴随状语
The actress came in , followed by her fans .
She sat by the window , lost in thought .
5 作让步状语
Much tired ,he still kept on working .=(Although he was tired ,) he ….
6 独立主格结构： 当分词的逻辑主语不是主句主语时，分词可以有自己独立的逻辑主语，这种结构称为独立主格结构。常用来表示伴随情况。
The boy rushed into the classroom , his face covered with sweat .
All things considered ,your article is of great value than hers .
Rewrite with proper conjunctions
Example : United we stand, divided we fall.
If we are united, we will stand, but if we are divided,we will fall.
1 Asked what had happened, he told us about it.
→When he was asked what had happened, …
2 Well known for his expert advice, he received many invitations to give lectures.
→Because he was well known for his expert advice, …
3 Given more time, we would be able to do the work much better.
If we were given more time,
4 Once translated into Chinese, the book became very popular among Chinese teenagers.
Once it was translated into Chinese,
5 Deeply interested in medicine, she decided to become a doctor.
Because she was deeply interested in medicine,
6 Left alone at home, Sam did not feel afraid at all.
Although he was left alone at home,
现在分词与过去分词作状语
现在分词作状语时，与其逻辑主语之间是主动关系，;而过去分词与其逻辑主语之间则表示被动关系。
Seeing these pictures, I couldn’t help thinking of those days when I was in Beijing . Seen from the top of a thirty-storeyed building, Beijing looks more magnificent. (see)
动词不定式具有名词、形容词和副词的特征。因此在句中可以做主语、表语、宾语、宾语补足语、定语和状语。
一、不定式做主语：
1、不定式做主语一般表示具体的某次动作。===动名词doing表示习惯的，经常的动作。
e.g:Tofinishthebuildinginamonthisdifficult.
Todosuchthingsisfoolish.
Toseeistobelieve.(对等)
注:1).不定式作主语时,谓语用单数
2).当主语较长，谓语较短时，常用it做形式主语，而将不定式放到谓语的后面。
it做形式主语，不定式放在谓语动词之后常用于下列结构中：
(1)Itis/was+adj.+ofsb.todo…
(2)Itis+adj.+forsb.+todo…
Itiseasy/difficult/hard/foolish/unwise/right/wrong/unnecessary
(3)itis+a+名词+todo...
Itisapity/apleasure/apleasantthing/one’sduty/anhonor/ashame/acrime/noeasyjob…todo
Ittakes(sb.)sometime/courage/patience…todo…
Itrequirescourage/patience/hardwork…todo…
_注意:probable和possible均可作表语，但possible可以用不定式作真实主语，而probable不能用不定式作真实主语。
Itisprobableforhimtocometothemeeting.(错)
Itispossibleforhimtocometothemeeting.
Itispossible/probablethathewillcometothemeeting.
二、不定式做表语
主语是以aimdutyhopeideaintentionplanjobsuggestionwishpurposetask等为中心词的名词词组或以what引导的名词性从句表示，后面的不定式说明其内容,不定式作表语常表示将来或现在的动作或状态。
eg:Myideaistoclimbthemountainfromthenorth.
Yourmistakewasnottowritethatletter.
WhatIwouldsuggestistostartworkatonce.
三、动词不定式作宾语
以不定式结构为宾语的动词有：
ask,agree,care,choose,demand,decide,expect,fail,help,hope,learn,manage,offer,plan,prepare,pretend,promise,refuse,want,wish等只能用动词不定式作宾语
口诀(接不定式作宾语的动词)
想要学习早打算(wantlearnplan)
快准备有希望(preparehopewishexpect)
同意否供选择(agreeofferchoose)
决定了已答应(decidebedeterminedpromise)
尽力去着手做(manageundertake)
别拒绝别假装(refusepretend)
失败不是属于你(fail)
e.g.Tomrefusedtolendmehispen.
Wehopetogettherebeforedark.
Thegirldecidedtodoitherself.
倒装是一种语法手段，用于表示一定的句子结构或强调某一句子成分。倒装句有两种完全倒装和部分倒装。
倒装句之全部倒装
全部倒装是只将句子中的谓语动词全部置于主语之前。此结构通常只用与一般现在时和一般过去时。常见的结构有
1)here,there,now,then,thus等副词置于句首,谓语动词常用be,come,go,lie,run。
Theregoesthebell.
2)表示运动方向的副词或地点状语置于句首，谓语表示运动的动词。
Outrushedamissilefromunderthebomber.
注意上述全部倒装的句型结构的主语必须是名词，如果主语是人称代词则不能完全倒装。
Herehecomes.