高三英語課前預習的知識點分析
英語學習首先是一種“模仿”,因此準確、大量的記憶是學好英語的基礎和前提。為了減少遺忘,提高記憶的效率,同學們在日常的學習中應做到“過度”學習,及時復習,循環(huán)往復,不留“夾生飯”。以下是小編給大家整理的高三英語課前預習的知識點分析,希望大家能夠喜歡!
高三英語課前預習的知識點分析1
一.主語從句
主語從句是在復合句中充當主語的從句,通常放在主句謂語動詞之前或由形式主語it代替,而本身放在句子末尾。
1. It 作形式主語和it引導強調句的比較。
It 作形式主語代替主語從句,主要是為了平衡句子結構,主語從句的連接詞沒有變化。而it引導的強調句則是對句子某一部分進行強調,無論強調的是什么成分,都可用連詞that。被強調部分指人是也可用who/whom。
例如:
It is a pity that you didn’t go to see the film.
It doesn’t interest me whether you succeed or not.
It is in the morning that the murder took place.
It is John that broke the window.
2. 用it 作形式主語的結構。
(1) It is +名詞+從句
It is a fact that … 事實是…
It is an honor that …非常榮幸
It is common knowledge that …是常識
(2) it is +形容詞+從句
It is natural that… 很自然…
It is strange that… 奇怪的是…
(3) it is +不及物動詞+從句
It seems that… 似乎…
It happened that… 碰巧…
(4) it +過去分詞+從句
It is reported that… 據(jù)報道…
It has been proved that… 已證實…
3. 主語從句不可位于句首的五種情況。
(1) if 引導的主語從句不可居于復合句句首。
(2) It is said , (reported) …結構中的主語從句不可提前。
例如:
It is said that President Jingo will visit our school next week. (right)
That President Jiang will visit our school next week is said. (wrong)
(3) It happens…, It occurs… 結構中的主語從句不可提前。
例如:
It occurred to him that he failed in the examination. (right)
That he failed in the examination occurred to him. (wrong)
(4) It doesn’t matter how/whether …結構中的主語從句不可提前。
例如:
It doesn’t matter whether he is wrong or not. (right)
Whether he is wrong or not doesn’t matter. (wrong)
(5) 含主語從句的復合句是疑問句時,主語從句不可提前。
例如:
Is it likely that it will rain in the evening? (right)
Is that will rain in the evening likely? (wrong)
4. What 與that 在引導主語從句時的區(qū)別。
What 引導主語從句時在句時在從句中充當句子成分,如主語.賓語.表語,而that 則不然。
例如:
1) What you said yesterday is right.
2) That she is still alive is a consolation.
高三英語課前預習的知識點分析2
Computers
一、重點短語
1. in common 共同的in common with 和…一樣 We have much/a lot /nothing /little /something in common.我們有很多/沒有/幾乎沒有/有一些相似之處。
2.put… in order把…排序in order按順序; 整齊out of order次序紊亂;(機器等)失靈; 出故障
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3. compare …with…把…與…想比 compare …to… 把…比作… compared with與…想比
4. over time 久而久之 5.begin as作為…開始 6. technological revolution科技革命
7. from then on. 從那時起 from now on 從現(xiàn)在起 8. artificial intelligence 人工智能
9. in size and in brainpower 在體積和腦容量上 10.as a result結果as a result of作為…的結果
11. go by(時間)流逝,過去 pass by經(jīng)過 12. human beings, human race, mankind人類
13. provide sb. with sth.= provide sth. for sb.給某人提供某物 14.be filled with充滿
14. a life of high quality高質量生活 15. in reality事實上16. be crazy about?癡迷于,醉心于
17. do research into 進行?的研究 18. have a good shot for a goal. 好好地射一個球
19. a devoted friend一個忠實朋友 20. be connected with …與…有聯(lián)系 21. get together 聚會
22.make up 組成,構成
23.in the early 1960s在20世紀 60 年代早期 24. on the football team在球隊中
25. come true 實現(xiàn),達到 My dream comes true.我夢想成真。realize one’s dream 實現(xiàn)夢想
26. in a way=in one way=in some ways從某種程度上說,從某些方面來說in the/one’s way擋路,礙事 on the/one’s way to …在去…的路上in this way用這種方法by the way 順便提一下 by way of London 途經(jīng)倫敦 lose one's way 迷路, 迷失方向 in no way絕不
27. after all畢竟,終究 in all=in total總共 above all尤其重要的是,首先 first of all首先,起初 not at all根本不,一點也不 all in all 總之
28. by oneself=on one’s own獨自 29. watch over 看守,照管,監(jiān)視 30.mobile phone手機
31. with the help of在…的幫助下 32. what’s more=in addition 更重要的是,而且,另外
二、重點句型
1. ?it nearly took two hundred years before I was built as an analytical machine?差不多到了200年之后我才被做成分析機。
It takes/took/be+時間段+before… “多久之后才…”
2. As time went by. 隨著時間的推移。
三、語法----被動語態(tài)
(一)概念:主動語態(tài)表示主語是動作的執(zhí)行者,被動語態(tài)表示主語是動作的承受者。
(二)各種時態(tài)被動語態(tài)的形式
1.一般現(xiàn)在時的被動語態(tài) am/is/are + done
2.一般過去時的被動語態(tài) was/were + done
3.一般將來時的被動語態(tài) ⑴will/shall be done ⑵be going to be done ⑶be to be done
4.現(xiàn)在進行時的被動語態(tài) is/am/are + being + done
表示說話人說話時或現(xiàn)階段正在進行的動作,經(jīng)常和時間副詞now (現(xiàn)在), right now (現(xiàn)在, 此刻), at present (現(xiàn)在,目前), at this moment (此刻)連用。
5.現(xiàn)在完成時的被動 have/has been done
現(xiàn)在完成時常與already, always, often, ever, never, yet, not...yet, just等不表示明確的時間副詞連用, 還可以和表示時間一直延續(xù)到目前的帶(ever )since, for的狀語及包括現(xiàn)在在內的詞連用。如: now, today, this month, this year, recently, these days,many times, so far, by now, in the past/last few days/years… 等。
6. 過去完成時的被動 had been done
7. 過去將來時的被動 would be done
8. 過去進行時的被動 was/were being done
9. 帶情態(tài)動詞的被動語態(tài) 情態(tài)動詞 + be done
10. 動詞不定式的被動式 to be done (三)注意事項:
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1. 并不是所有動詞都有被動語態(tài)
happen, take place, break out, belong to, cost, last
2. 短語動詞、固定搭配變被動語態(tài)介詞副詞不省。 E.g. Time should be made full use of.
3. 雙賓語:一個賓語成主語,另一主語保留不變。 E.g. Mother will buy me an iphone5. → I will be bought an iphone5 (by my mother) .
→ An iphone5 will be bought for me (by my mother) .
4. 復合賓語(含賓補) 省to動詞不定式變被動還原to
使役:make sb. do sth.→Sb. be made to do sth.
感官類:see/hear sb. do sth. →Sb. be seen/heard to do sth.
e.g. Mum made me clean the floor. →I was made to clean the floor.
高三英語課前預習的知識點分析3
助動詞
1)協(xié)助主要動詞構成謂語動詞的詞叫助動詞。被協(xié)助的動詞稱作主要動詞。助動詞自身沒有詞義,不可單獨使用。例如:
He doesn′t like English. 他不喜歡英語。
(doesn′t是助動詞,無詞義;like是主要動詞,有詞義)
2) 助動詞協(xié)助主要動詞完成以下功用,可以用來:
a. 表示時態(tài)。例如:
He is singing. 他在唱歌。(北京安通學校提供)
He has got married. 他已結婚。
b. 表示語態(tài)。例如:
He was sent to England. 他被派往英國。
c. 構成疑問句。例如:
Do you like college life? 你喜歡大學生活嗎?
Did you study English before you came here? 你來這兒之前學過英語嗎?
d. 與否定副詞not合用,構成否定句。例如:
I don′t like him. 我不喜歡他。
e. 加強語氣。例如:
Do come to the party tomorrow evening. 明天晚上一定來參加晚會。
He did know that. 他的確知道那件事。
3) 最常用的助動詞有:be, have, do, shall, will, should, would等。
3 助動詞be的用法
1) be +現(xiàn)在分詞,構成進行時態(tài)。例如:
They are having a meeting. 他們正在開會。
English is becoming more and more important. 英語現(xiàn)在越來越重要。(北京安通學校提供)
2) be + 過去分詞,構成被動語態(tài)。例如:
The window was broken by Tom.. 窗戶是湯姆打碎的。