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高二册第六单元疑难点击edu作者：相关文章：互联网更新日期：2005-05-09作者：吴安运1.Toensuresafety,thetrainiscontrolledbyanadvancedcomputersystem.ensure用作动词，意思是\"确保；担保\"，常用于以下句型：①ensurethat...保证......Itriedtoensurethateverybodyunderstoodtheinstructions.我设法确保每个人都明白这个说明。Ican\'tensurethathewillarrivethereintime.我不能保证他及时赶到那儿。②ensuresb.sth.确保某人某事/物Thismedicinewillensureyouagoodsleep.这药会确保你睡个好觉。2.Itwillnotbebusinessasusualinthefuture.asusual意思是\"像往常一样；一如往常\"。Asusual,thereweren\'tmanypeopleatthemeeting.像往常一样，来开会的人不多。Yesterdaymorningshecameintotheclassroomasusual.昨天早上她像往常一样进入教室。【提醒注意】usually为副词，也有\"通常；往常\"的意思，常放在be后、情态动词或助动词与动词之间，为加强语气也可置于句首。Youdon\'tusuallyarrivelate,doyou?你通常不迟到的，是吗？Usuallyshegetsupveryearly.通常她起得很早。3.Theyarecarefulaboutwhattheyeatandexerciseregularly.becareful意思是\"注意；当心\"，常用于以下句型：①becarefultodosth.Becarefulnottobelateforclass.小心上课不要晚了。②becareful(that)...Becarefulthatyouarenotlateforclass.注意上课不要迟到。③becarefulabout/of(=takecareof)Becarefulofyourhealth.注意你的身体。④becareful(in)doingsth.Becareful(in)crossingtheroad.过马路时要小心。⑤becarefulwithsth.Becarefulwithyourwork.工作要认真。4.Advancesinmedicalsciencehavealsoallowedustodealwithnewdiseases,suchasSARS.deal在句中可用作及物动词或不及物动词：①用作不及物动词，常与with连用，意思是\"对付；处理\"。Heseemedtobequick-tempered,butwasactuallynotdifficulttodealwith.他似乎性子急躁，但实际上并不难相处。Heknowshowtodealwithchildren.他知道怎样对付孩子。②用作及物动词，意思是\"分配；给予\"等。Itriedtodealjusticetoallmen.我力求公正地对待所有的人。5.Ifwelearntoacceptchangeandappreciatewhatisnewanddifferent,wewillbewell-preparedforwhateverthefuturemayhaveinstore.appreciate用作动词，意思是\"鉴赏；欣赏；赏识；感谢\"等，常用于以下句型：①appreciate+n.Iappreciateyourgoodnessincalling.你好心来看我，我很感激。②appreciate+V-ingWeappreciatehearingfromyouagain.我们乐于再次收到你的来信。③appreciateit+if从句Ishallappreciateitifyouwilldomethatfavour.若是你肯帮那个忙，我会非常感激的。