2. be +形容词+ of。of后接表对象或目标的词，这类短语有很多：be aware of觉察, be ashamed of以…为耻, be afraid of担心, be bare of没有, be careful of小心, be clear of还清债务, be certain of确信, be composed of由…构成, be envious of嫉妒, be forgetful of健忘, be fond of喜欢, be free of免于；摆脱, be full of充满, be guilty of认罪, be hopeful of抱有希望, be informed of汇报, be impatient of对…无耐心, be jealous of嫉妒, be made of用…制成, be mindful of留意, be proud of以…为骄傲, be sick of烦于, be short of缺乏, be sure of确信, be tired of困于, be worthy of值得。

3.of+名词构成的词组：of age成年, of choice精选的，of course当然, of late最近，of name有名的，of oneself自动地，of purpose有意地，of use有用，of value有价值的。

八、ON

1.动词+on

a)动词+ on。介词on表示“凭借，产生某结果，接通”等意思：act on对…有作用, bring on促使；导致, call on拜访某人, count on依赖, carry on执行, depend on取决, feed on以…为生, figure on料想；推断, go on继续, have on穿着, insist on坚持, keep on继续, lean on依赖, live on以…为生, pull on迅速穿上, put on穿上, switch on接通（电源）, take to喜欢；养成；轻易学会，turn on接通（电源）, work on操作, wait on侍候。例如：

This kind of medicine acts on the heart. 这种药对心脏有好处。

The fine weather brings on the crops nicely. 好天气促使庄稼长势良好。

We count on you to help. 我们有赖你的帮助。

b)动词+sb.(sth.)+ on +sb.(sth.)。on的意思是“以…，对…，在某方面”：base on以…为基础, congratulate on恭贺, fix on固定, have mercy on怜悯, have pity on怜惜, keep watch on监视, spend on把时间、精力花在某方面。例如：

Theory should be based on practice. 理论联系实际。

Congratulate on your success in the competition. 恭喜你竞赛获得成功。

2.be+形容词+on的词组：be dependent on依赖, be hard on对某人苛刻, be impressed on对…印象深刻, be keen on渴望, be strict on对…严格。例如：

We can’t just be dependent on our parents. 我们不能只依赖父母。

He is keen on going abroad. 他渴望出国。

3.on+名词构成的词组：on表示处于某种状态或在某个方位：on board乘（车,飞机）, on call听候召唤, on duty值班, on earth到底, on fire着火, on foot步行，on guard在岗，on hire雇用，on holiday度假，on leave休假，on one’s knees跪下, on one’s way在…的路上,on purpose故意, on sale待售，on shore在岸上, on time准时, on the move行动, on the other hand另一方面, on the spot当场,

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