Should用法归纳.pdf
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1、Should 用法归纳should 一词在中学英语课本中出现频率很高。它的用法灵活、含义丰富,因而一直是历年高考关注的热点。现将其具体用法分述如下:一.should 作为助动词 shall 的过去式,可以在间接引语中与第一人称主语搭配,表示过去将来时间。例如:The group leader announced that we should(=would)begin to worksoon.小组长宣布:我们不久就开始工作。A week ago,I told him that I should(=would)go to Beijing thenext day.一个星期以前,我告诉他我第二天就去北
2、京。二.should 作为情态动词,通常用来表示现在或将来的责任或义务,译作“应该”、“应当”,这时它可以和 ought to,besupposed to 互换使用。例如:You should(=are supposed to)complete your test in time.你们应该按时做完你们的实验。You should(=ought to)tell your mother about it at once.你应该立即把此事告诉你妈妈。In sum,theory should be combined with practice.总之,理论应该与实验相结合。三.should 作为情态动词
3、,可以用在条件状语从句中,表示语气较强的假设,译作“万一”、“竟然”,这时也可将 should置于从句之首,即将 should 放在主语前面,而省略从属连词 if.例如:If you should fail to come,ask Mrs Chen to work in your place.(=Should you fail to come,ask Mrs Chen to work in your place.)万一你来不了,就叫陈夫人代替你。If anyone should come,say I am not at home.(=Should anyone come,say I am no
4、t at home.)万一有人来访,就说我不在家。If it should rain tomorrow,I wouldnt go.(=Should it raintomorrow,I wouldnt go.)万一明天天下雨,我就不去了。四.should 作为情态动词,可以表示谦逊、客气、委婉之意,译为“可”、“倒”。例如:I should say that it would be better to try it again.我倒是认为最好再试一试。You are mistaken,I should say.据我看,你搞错了。He should expect their basketball
5、team to win the match.他倒是希望他们的篮球队赢得这场比赛的胜利。Should you like some tea你可喜欢喝茶五.should 作为情态动词,可以用来表示意外、惊喜或者在说话人看来是不可思议的。尤其在以 why,who,how等开头的修辞疑问句或某些感叹句中常常译为“竟会”、“居然”。例如:How should I know it我怎么会知道这件事Why should you be so late today你今天怎么来得这么晚When I went out,whom should I meet but my old friend Xiao Li!当我出去时
6、,想不到竟会碰见我的老朋友小李!I dont see any reason why he shouldnt be happy.我不明白为什么他居然不愉快。六.should 作为情态动词,可以用来表示有较大可能实现的猜测、推论,通常译为“可能”、“总该吧”,相当于 beexpected to.例如:They should be home by now,I think.我想现在他们总该到家了吧。The report was written after a careful investigation,so it shouldbe reliable.这份报告是经过周密调查后才写成的,所以应该是可靠的。
7、七.should 作为情态动词,用在由 so that,for fear that,lest 引导的目的状语从句和 incase(that)引导的条件状语从句中,有“能够”、“可能”、“会”之意。例如:They got up early so that they should(=could/might)catch thefirst bus in time.他们起得很早以便能及时赶上头班公交车。He is working hared for fear that he should fall behind others.他努力工作,唯恐落在别人后面。We went over the documen
8、t again and again lest we should miss any ofthe main points.我们把文件看了一遍又一遍,唯恐忽略了其中的什么要点。He took an umbrella in case(that)it should rain.他带了一把雨伞,以防天下雨。八.should 作为情态动词,可以用于下列虚拟语气句中:1.用在表示与将来事实相反的条件状语从句中,构成“If should(do sth),would/could/might(do sth.)”句式。例如:If it should(或 were to)rain tomorrow,the sports
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