Examples Learning isa matter of seeing much and studying much The King's mental state was becoming a matter of concern. Personally Ican't stand rock music,but I suppos it'sallaatter of opinion I can't say which wine is best-it's a matter of personal taste 3.fool around/about:to waste time behaving ina silly way Examples He spent the whole afternoonjust fooling around. Stop fooling around otherwise you'll never amount to anything Related expressions CE. He noticed a strange-looking person hanging about the bus stop.闲连：闲荡 I hung around the station for an hour but he never showed up. The children lingered on at the zoo until the closing time. 4.bring about:to make sth.happen Examples Computers have brought about many changes in workplace I offered to act as mediator and try to bring about reconciliation between the two parties. That unpopular measure finally brought about the downfall of the government. “bring”"phrases: CE. bring down打倒：击落：降低 bring forth使产生 bring forward提出：使涌现出：显示 bring on引起，导致：使发展（或前进） bring out使（意义等）明白表示出来 bring off使成功：完成 bring in收（庄稼）等：引来，引进（风尚等） bring home to sb.使某人深切地感到（或清楚地认识到） 5.giverise to:to be the reason why sth.esp.sth.bad or unpleasant happens Examples Two phenomena are giving rise to world-wide concerr -mass unemployment and mass Examples: Learning is a matter of seeing much, suffering much and studying much. The King’s mental state was becoming a matter of concern. Personally I can’t stand rock music, but I suppose it’s all a matter of opinion. I can’t say which wine is best—it’s a matter of personal taste. 3. fool around/about: to waste time behaving in a silly way Examples: He spent the whole afternoon just fooling around. Stop fooling around otherwise you’ll never amount to anything. Related expressions: Cf. He noticed a strange-looking person hanging about the bus stop. 闲逛；闲荡 I hung around the station for an hour but he never showed up. 等候 The children lingered on at the zoo until the closing time. 逗留 4. bring about: to make sth. happen Examples: Computers have brought about many changes in workplace. I offered to act as mediator and try to bring about reconciliation between the two parties. That unpopular measure finally brought about the downfall of the government. “bring” phrases: Cf. bring down 打倒； 击落；降低 bring forth 使产生 bring forward 提出；使涌现出；显示 bring on 引起，导致；使发展（或前进） bring out 使（意义等）明白表示出来 bring off 使成功；完成 bring in 收（庄稼）等；引来，引进（风尚等） bring home to sb. 使某人深切地感到（或清楚地认识到） 5. give rise to: to be the reason why sth. esp. sth. bad or unpleasant happens Examples: Two phenomena are giving rise to world-wide concern—mass unemployment and mass