alternative,choose,pick,select都含有一定的"选择"之意

　　alternative adj. n. 供选择的,抉择,供选择的东西.指在两者之间进行选择,两者选一的

　　choose 适用范围最广,指从众多的对象中挑选,这中挑选常取决于个人的意志与判断,不强调客观标准.它所选择的对象可以是不同种类的,可以是有形的或无形的.还常带有最终选定的含义,即表示选定候不再变化.

　　pick 口头用语,指仔细地,精心地选择,含有挑剔的意思.一般指挑选有形的东西

　　select 语气比choose重,多用于正式场合.指仔细地,审慎地精选,强调客观性,而不是主观性.所挑选的对象可以是有形或无形的,但一定是同种类的. ________________________________________1.He selected an appropriate birthday card for his mother.他给母亲精心挑选了一张合适的生日卡.

　　2.Children shouldn’t pick food.孩子不应该挑食.(pick off摘去,采取)

　　3 He chose Miss Lilyfor his wife.他选择了莉丽小姐作为他的妻子.(从本句可以看出"choose常带有最终选定的含义"这一点)

　　4.When traveling,you are advised to take travelers' checks,which provide a secure alternative to carrying your money in cash.建议你旅游时带旅行支票,那样要比带现金安全.

　　5.I'm to pick out a few good books to send to my friend.我要挑选几本好书给我的朋友.(pick up收拾整理,用车接人 pick out挑选,拣出 pick at吃一点点,无食欲地吃) _______________________________________

　　altitude,aptitude,attitude,latitude都非常形近

　　altitude 高度,海拔(an altitude of 20,000 metres above sea level海拔20,000米)

　　aptitude 才能,智力,倾向,习性

　　attitude 态度,看法

　　latitude 纬度(longitude经度) ________________________________________1.Beavers have an aptitude for building dams.水獭有筑坝的习性.

　　2.She takes the attitude that Children should be allowed to learn at their own pace. 她采取的态度就是应该允许孩子们按照自己的节奏学习.

　　3 He has an aptitude for languages.他有学语言的才能.

　　4.What's yourattitudetowards this question?你对这个问题有什么看法?

　　5.Taipei is located at 121.7 degrees east longitude and 25 degrees northlatitude.台北位于东经121.7度,北纬25度.

　　6.The pilot is exercising the altitudeflight.飞行员正在练习高空飞行. ________________________________________

　　announce, declare, proclaim都含有一定的"宣布"之意

　　announce 指对公众或特定的一群关心的人进行宣布，常指大家感兴趣的事，如国家大事、商品信息、生死病婚、开会等新闻

　　declare 指在庄严场合，官方权威人士公开郑重宣布，有时指在公共场合对某事表明态度

　　proclaim 指官方事务中当局对大众所作的重要宣布

　　其实,三个词之间有时也可经常互换使用. ________________________________________1.Everyone was silent as he announced the winner of the competition.当他宣布竞赛的获胜者时,大家都静静地倾听.

　　2.The government declared war on the drug dealers.政府向毒品贩子宣战.(declare war on/against…向…宣战;proclaim war宣战)

　　3.They proclaimed him a model worker..它们宣布他为劳动模范.

　　4.The chairman declared the exhibition open.主席宣布展览会开幕.(本句感觉也可用announced,你认为呢?)

　　5.The Congress of the Communist Party of China was announced to mee________________________________________

　　ample, adequate, plentiful,sufficient都含有一定的"足够,丰富"之意

　　ample 指不仅能达到应有的程度,满足需要,而且还有余,一般不修饰数量不定的名词(ample time充裕的时间;an ample basket of fruit满满一篮水果;ample space宽敞的空间)

　　adequate 足够的,充分的,指数量和质量上复合一个特定的标准或不太高的要求

　　plentiful 丰富的,很多的,富裕的

　　sufficient 尤指程度上多到能满足或达到某种特殊需要,特别是精神上的需要 ________________________________________1.There is ample evidence to suggest that the lawyer in question knew exactly what she was doing.有充分证据表明那个正在提问的律师确实知道她在做什么.(ample evidence充分证据)

　　2.By law,when one makes a large purchase,he should have adequate opportunity to change his mind.根据法律,当一个人进行大宗购买时,他应该有充分的机会改变自己的注意.

　　3.The supply is not adequate to the demand.供不应求.

　　4.He has acquired sufficient proficiency to read Chinese literary works.他已获得足够能力阅读中国文学著作.

　　5.A plentiful harvest is in sight.丰收在望.(plentiful/good harvest丰收) ________________________________________

　　amplify, enhance, enlarge,expand,magnify都含有一定的"扩大,提高"之意

　　amplify 放大,扩大,增强,指放大,增强(信号等)

　　enhance 提高,增强,指(价格,力量,吸引力,声望)等的增加,提高.

　　enlarge 指体积,大小,范围,能力等方面的增加