worry about 做“擔(dān)心”之意時(shí),其近義短語(yǔ)有 be afraid of/that,但是后者比較具體,而worry about比較泛.
i worry about him.我很擔(dān)心他.
i am afraid that he can not come.我很擔(dān)心他來(lái)不了.
worry about反義詞組：take it easy 悠著點(diǎn)；慢慢來(lái)；別擔(dān)心
例句：Take it easy,we have enough time.別擔(dān)心,我們有的是時(shí)間.
problem做“問(wèn)題”時(shí),同義詞question,
problem表示的“問(wèn)題”含有困難之意,比如
No problem!沒(méi)問(wèn)題!（言下之意沒(méi)有困難）；
而question表示的“問(wèn)題”含有思考困惑之意.
Any question?有什么問(wèn)題（疑問(wèn)）嗎?
problem 和question表意完全一致時(shí)可通用.
Do you have any problem?Do you have any question?
problem做“麻煩”時(shí),同義詞trouble,表意完全一致時(shí)可通用.
He is a big problem.He is a big trouble.他是個(gè)大麻煩.
你什么懸賞金都沒(méi)有,題目也不是很完整,我都認(rèn)真寫了這么多,：）