人教版高一英語(yǔ)下冊(cè)第四單元知識(shí)點(diǎn)

1、以下是給你推薦的高一英語(yǔ)下冊(cè)第四單元知識(shí)點(diǎn)，希望對(duì)你有幫 助! 英語(yǔ)第四單元知識(shí)點(diǎn) 1. In the 18th century, Benjamin Franklin cinducted a number of experiments in which he showed what electricity is. 在 18 世紀(jì)，本杰明富蘭克林進(jìn)行了許屢次關(guān)于電的實(shí)驗(yàn)。問(wèn) .in which he showed what electrivity is. in + which 引導(dǎo)定語(yǔ)從 句，修飾先行詞 experiments。這里 which 不能由 that 替換。(2).what elec

2、tricity is 賓語(yǔ)從句，做 show 的賓語(yǔ)。(3)A number of. 許多“，大量，接可數(shù)名詞復(fù)數(shù)，謂語(yǔ)要用復(fù)數(shù)形式;the number of.的數(shù)量謂語(yǔ)動(dòng)詞應(yīng)該用單數(shù)。例如： A nu mber of peasa nts are work ing in the fields with the sun burning in the shy. 許多農(nóng)民頂著烈日在地里耕作。2. Having realized that I could use a kite to aftract lightning. I decided to do an experiment. 當(dāng)我意思到能用風(fēng)箏

3、來(lái)接收閃電后，我決定做個(gè) 實(shí)驗(yàn)。問(wèn)Having realized that .在句子充當(dāng)什 么成分?答Having realized that . 現(xiàn)在分詞短語(yǔ)做時(shí)間狀語(yǔ)。(=when I had realized that I could use a kite to attract lightning, .)3. Most kites are made of paper, but a kite made of silk will last longer in weather with rain and strong winds. 大多數(shù)風(fēng)箏是由紙做的，但用絲綢制的風(fēng)箏在雨和大風(fēng)的天氣中持續(xù)的

4、時(shí)間會(huì)長(zhǎng)一些。問(wèn) made of silk 在句中作何成分 ?be made of 與 be made from 有 何區(qū)別?答 made of silk 過(guò)去粉刺短語(yǔ)所定語(yǔ)，修飾 a kite, he made of. 由構(gòu)成(看得出原材料);be made from由構(gòu)成(看不出原材料)。4. The pieces should be just long enough to reach the comers of the han dkerchief那木頭片的長(zhǎng)度應(yīng)該到達(dá)手帕的四個(gè)角。問(wèn)enough在句中如何用？reach是什么意思？答(1)enough to ." 足夠的，en

5、ough修飾形容詞時(shí)應(yīng)放在形容詞之后。例如：kind enough足夠善良的;careful enough足夠仔細(xì)的。(2)reach v. & n. 到達(dá) ;夠得著。例如： out of reach 夠不著。5. Add a tail to the frame and tie a long string to the cross so you can control the kite. 在架子上加一個(gè)把柄，在十字架上栓一根長(zhǎng)細(xì)繩以便你 能夠控制那風(fēng)箏。問(wèn)add.to是什么意思？答add.to把加到 。例如： Please add an article to the sentence,

6、 then it is correct now . 請(qǐng)?jiān)谶@個(gè)句子中加上一個(gè)定冠詞，然后它就對(duì)了。6. THis ribbon, which must not get wet, will protect you from the electricity 這根絲帶一定不能變濕，它是用來(lái)保護(hù)你不被觸電的。問(wèn)which must not get wet 作何成分，protectfrom 是什么意思？答(1).which must not get wet ，非限制性定語(yǔ)從句做定語(yǔ)，修飾This ribbon.(2)protect . from. 保護(hù)免受, 相當(dāng)于 prevent .from .;sto

7、p .from.;keep .from。例如：We should prevent our environment from being polluted. 我們 應(yīng)該保護(hù)我們的環(huán)境免受污染。7. Around the world, animals are used to test produce such as shampoo, skin creams and new cancer drugs在全世界，動(dòng)物們被用來(lái)測(cè) 試如洗發(fā)水，皮膚霜以及新的治癌藥等產(chǎn)品。問(wèn)be used to do ., be used to doing .禾口 used to do 有何區(qū) 別？答be used to d

8、o .被用來(lái)做什么 be used to doing .習(xí)慣于做used to do .過(guò)去常常做8. They also believe that it is possible touse much fewer an imals他們還相信用更少的動(dòng)物測(cè)試是可能的。問(wèn)it is possible to do .做是可能的;It is + adj. +to do . it 是形 式主語(yǔ)，真正的主語(yǔ)是動(dòng)詞不定式短語(yǔ) to do.例如： It is difficult to learn two foreigh languages. 學(xué)會(huì)兩門外語(yǔ)是困難的。It is impossible to wal

9、k on the moon. 在月球上行走是不可能的。 that he is lying.3、 意識(shí)到他一個(gè) 人干不了這件事，他向我求助。 that he couldn 'dto it himself, he asked me for help.4、 那位老師對(duì)全班的學(xué)生進(jìn)行了數(shù)學(xué)測(cè)試。The teacher the whole class maths.、5 請(qǐng)你幫我選出一本雜志好嗎 ？Will you a magazine for me？、6 我們可以在大廳拍照嗎 ? take pictures in thehall?7、 請(qǐng)?jiān)诳Х戎屑狱c(diǎn)糖。Please some sugar the

10、 coffee、.8 媽媽開(kāi)始做家務(wù)。Mother is her housework.9、 什么也阻止不了我們到這里來(lái)。Nothing will us here.10、 他沒(méi)有勇氣違背他父親的意愿。He has no couragehis father'、s穿上11這件外套。它可以御寒。Put on this coat. It will you the cold.12、 這些酒瓶是用玻璃制造的。These wine bottles glass.1、3 這種酒是用葡萄釀造的。This kind of wine grapes.1、4 注意在實(shí)驗(yàn)開(kāi)始之前把一切都準(zhǔn)備好。 that every

11、thing is prepared before the experiment begins.15、 每個(gè)隊(duì)都有兩次得分，比賽不分勝負(fù)。Each team scored twice and the game .16、 為什么學(xué)生在聞從瓶子里冒出來(lái)的氣味時(shí)要小心 ?Why should students from bottle?17、 如果你眼睛里進(jìn)了東西，該怎么辦 ?What whensomething gets into your eyes?18、 它實(shí)在太昂貴了。It is expensive.19、 它既快又干凈，而且不產(chǎn)生噪音，就像飛機(jī)一樣。It 'fasst and clean and it does not make any noise,