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經(jīng)典短語(yǔ)透視
【短語(yǔ)1】be concerned about
【點(diǎn)撥】be concerned about意為"對(duì)……擔(dān)心；對(duì)……關(guān)心"， 與be concerned for意思相同。如：
Many scientists are concerned about the impact of global warming on the world.
As a nurse， she is deeply concerned about the health of her patients.
【拓展】與concern相關(guān)的其他用法：
be concerned with"與……有關(guān)；涉及"；as far as ... be concerned"就……而言"；concerning介詞，"關(guān)于……"。如：
Today’s lesson is concerned with English Literature.
As far as I’m concerned， science and arts education shouldn’t be separated.
I haven’t learnt anything concerning this matter before.
【短語(yǔ)2】feed on
【點(diǎn)撥】feed on意為"以……為食物"。如：
Owls feed on mice and other small animals.
【拓展】1. feed on與live on為同義詞，但feed on常側(cè)重指"(動(dòng)物)以……為食"；而live on既可以指"(動(dòng)物)以……為食"，又可以指"(人)以……為食"。如：
Southerners usually live on rice while people in the north live on wheat.
2. feed sth. to ... = feed ... on sth. 意為"用……喂……"。如：
My little son often feeds bread to the ducks.
She fed her guests on the produce of her garden.
【短語(yǔ)3】stand for
【點(diǎn)撥】stand for意為"代表， 象征某種含義"，不用于被動(dòng)語(yǔ)態(tài)。如：
Do you know what the initials GDP stand for？
【拓展】
1. stand for還有"主張，支持；容忍，忍受"之意，作"容忍，忍受"講時(shí)，常用于否定句或疑問(wèn)句中。如：
Which team do you stand for？
Teachers usually won’t stand for any cheating of their students.
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