coherence"統(tǒng)一,一致性”；cohesion"結(jié)合力，團結(jié)”，The cohesion or molecules分子的結(jié)合力。

　　17．compare with和 compare to

　　compare with'‘和……比起來”

　　compare to"好比”。He compared the moon to a silver plate．他把月亮比成一個大銀盤。

　　18．impel和compel

　　impel"推動，驅(qū)使，激勵”。impel sb．to do sth．激勵某人做某事；

　　compel"強迫，脅迫，迫使”。compel sb．to oneg will強迫人服從自己。

　　19．complement和compliment

　　complement"補足(物)，補全”，“補足語”。

　　compliment"恭維話，贊辭，敬意”；Your presence is a great compliment．承蒙光臨，不勝榮幸。

　　2o．continual和continuous

　　continual"連續(xù)，繼續(xù)”；“頻繁的”；continual bouts of toothache一陣接一陣的牙痛。(這中間可能有停頓或間斷。)

　　continuous"連續(xù)”(指從不間斷的)；we've had three weeks of continuous rain．我們這里連續(xù)三周下雨不停。

　　21．might和could

　　might表明“possibility”。

　　could應該用來表明"permission"．Mum said we could(might)go to the football match．

　　22．council和counsel

　　council"議事機構(gòu)”，委員會a cabinet council內(nèi)閣會議。

　　counsel"商議，勸告”；follow sb．'s counsel close牢記某人忠告。

　　23．economical和economic

　　economic"經(jīng)濟學的，經(jīng)濟上的”an economic survey of Scotland蘇格蘭經(jīng)濟調(diào)查；an economic block．a(chǎn)de經(jīng)濟封鎖；economical"節(jié)儉的，經(jīng)濟的”；He's had to learn to be more economical now that his only in．come is a small pension．