c
1、can, be able to
這兩個(gè)詞都可以表示“能夠”。can通常用來(lái)表示現(xiàn)在的一般能力。如：look, i can do it.嗨，我會(huì)做這事啦。而當(dāng)表示將來(lái)能力時(shí)，一般要用will be able to。此外，be able to 還表示要經(jīng)過(guò)一番努力才能做到的事。如：if i concentrate on the work, i'll be able to work out the problem.如果我集中思想于工作的話，我就可以想出這個(gè)問(wèn)題的解決方法。i'll be able to speak french in another few months.再過(guò)幾個(gè)月我就可以說(shuō)法語(yǔ)了。
2、call on, visit
call on：“拜訪”，為社交用語(yǔ)，強(qiáng)調(diào)較正式的訪問(wèn)。如：i hope to call on you at your office at three o'clock today.我希望今天下午三點(diǎn)鐘到辦公室去拜訪你。
visit：“訪問(wèn)，參觀”，指為一定目的去訪問(wèn)某人或參觀某地。如：professor li is often visited by his students.學(xué)生們常去看望李教授。
注意：call at與call on都可以作“訪問(wèn)”解，但call at后接地點(diǎn)；call on后接人。如：i called at the bank and drew some money today.今天我去銀行取了些錢。
3、centre, middle
centre“中心”，指圓和球體的中心點(diǎn)并可用作比喻，指事物或活動(dòng)中心。如；he placed the flowers in the centre of the table.他把花放在桌子的中央。at the centre of the park there is a monument in memory of the hero.在公園的中央有一個(gè)英雄紀(jì)念碑。london is the political, economical and cultural centre of britain.倫敦是英國(guó)政治，經(jīng)濟(jì)和文化中心。
middle：“中間”，指空間或時(shí)間意義上與兩端等距離的中間部分。如：he telephoned me in the middle of the night.他半夜給我打來(lái)電話。soon they were in the middle of the river.不久他們來(lái)到河中央。
4、chance, opportunity
chance表示“機(jī)會(huì)；可能性（強(qiáng)調(diào)偶然性）”，如：if we can swim, the chances are that we can save our lives.如果我們會(huì)游泳的話，我們就有可能得救。harold has lost a lot of money so he wants to take a chance on stock exchange.海洛得丟了很多錢，因此他想在股票上碰一碰運(yùn)氣。
而opportunity表示機(jī)遇（強(qiáng)調(diào)好時(shí)機(jī)），既可作可數(shù)名詞又可作不可數(shù)名詞。如：this has been my only opportunity to practise speaking english.這一直是我練習(xí)英語(yǔ)口語(yǔ)的唯一機(jī)會(huì)。i am very glad to have had the opportunity to talk to you.我很高興能有機(jī)會(huì)與你交談。
5、certain, sure
certain表示“有把握的，確信的”，語(yǔ)氣較強(qiáng)，主語(yǔ)可以是人也可以是物，表示有充分的信心。有時(shí)也有“某些”的含義。如：it is certain that the temperature will rise.氣溫一定會(huì)上升。he is certain to come.他一定會(huì)來(lái)。
sure“確信的，無(wú)疑的”，作此義解時(shí)，主語(yǔ)常為人而不是物。如：he is sure to succeed.他一定會(huì)成功。注意：certain和sure在接不定式和of短語(yǔ)時(shí)意思上有差別。試比較：they are certain/sure to succeed.他們一定會(huì)成功。they are certain/sure of success.他們有成功的把握。第一例用不定式表示說(shuō)話人對(duì)某事的推斷，有“一定，必然”的含義；第二例用of短語(yǔ)表示主語(yǔ)本人的信念，有“確信，對(duì)...有把握”的含義。再如：the strike is certain/sure to take place.罷工必然會(huì)發(fā)生。they are certain/sure of victory.他們確信會(huì)獲得勝利。
6、care about, care for
這是兩個(gè)動(dòng)介型短語(yǔ)動(dòng)詞，后接名詞或代詞作其賓語(yǔ)。在表示“為...擔(dān)憂”的意思時(shí)，兩者可交換使用。
care about主要用來(lái)表示“對(duì)...感興趣；關(guān)心；在乎”的意思。如：i don't much care about going.我并不很想去。i don't care about what people think.我不在乎人們?cè)趺凑J(rèn)為。
care for則主要用來(lái)表示“喜歡，對(duì)...中意”和“照顧”等意思。如：she doesn't seem to care for him.她好像不喜歡他。small children are well cared for in nurseries when their parents are working.當(dāng)父母在工作時(shí)，孩子們?cè)谕袃核锸艿搅己玫恼疹櫋?/p>
7、carry on, carry out
carry on意為“進(jìn)行，繼續(xù)”，強(qiáng)調(diào)一個(gè)行為的進(jìn)行過(guò)程。它可以不跟賓語(yǔ)，也可接表示“工作，討論，競(jìng)賽，戰(zhàn)斗”等一類的名詞作賓語(yǔ)，相當(dāng)于continue。它另可作“經(jīng)營(yíng)”解，相當(dāng)于manage。如：don't let me interrupt you, just carry on.別讓我打斷你，請(qǐng)繼續(xù)。i'll try to carry on the work in spite of difficulties.盡管有困難，但我還是會(huì)繼續(xù)這項(xiàng)工作。rising costs make it hard to carry on the business.成本上升給生意經(jīng)營(yíng)帶來(lái)了困難。
carry out意為“進(jìn)行，貫徹，實(shí)現(xiàn)”，含有按照某個(gè)要求或準(zhǔn)則進(jìn)行的意思。它必須接賓語(yǔ)，且賓語(yǔ)往往是表示“工作，活動(dòng)，職責(zé)，命令，計(jì)劃”等一類的名詞。此詞語(yǔ)相當(dāng)于put into practice。如：i have some difficulties in carrying out her order.我感到執(zhí)行她的命令有些困難。the government was trying to carry out the policy of "family planning".當(dāng)時(shí)，政府正盡力貫徹“計(jì)劃生育”政策。
8、catch up with, keep up with
catch up with為“趕上（某人或某事）”，有追上并可能超過(guò)的含義。如：we'll do out best to catch up with the advanced industrial countries.我們將盡力趕超先進(jìn)的工業(yè)國(guó)家。
keep up with作“不落后于（某人或某對(duì)手）”解，有與之并駕齊驅(qū)的含義。如：the girls had to run to keep up with the boys.這些女孩子不得不加快腳步以趕上男孩子們。
9、cause, reason
10、clothes, clothing, cloth
11、chief, main
12、choose, select
13、come to one's help, come for one's help
14、continual, continuous
15、compare...to, compare...with
16、consider, regard as, treat as
17、coloured, colourful