英语四级语法备战-should用法详解
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          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 be expected 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 should be 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。

      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 in case (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 the first 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 document again and again lest we should miss any of the 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 meeting would be put off. (= Should it rain tomorrow/ Were it to rain tomorrow, the sports meeting would be put off.)

      如果明天天下雨,运动会就会延期举行。

      2. 用在 suggest (propose), arrange, plan, decide,, advise, order, demand, request, desire, insist 等表示“建议”、“要求”、“命令”、“决定”、“安排”、“计划”、“主张”的动词后面接的宾语从句中。这里的 should 也可以省略。例如:

      He suggested/ proposed/ demanded/ advised that they (should) read the rules carefully.

      他建议 / 提议 / 要求 / 劝告他们要仔细阅读这些规则。

      The doctor ordered that she (should) stay in bed for another week.

      医生嘱咐她再卧床休息一个星期。

      He insisted that we (should )take up the matter at the meeting.

      他坚持要我们在会上提出这个问题。

      3. 用在“ It is desired/ suggested/ requested/ ordered/ proposed/ decided ”之后由 that 引导的主语从句中, should 也可以省略。例如:

      It is requested that Miss Yang (should) give a performance at the party.

      人们要求杨小姐在聚会上表演一个节目。

      It has been arranged (planned) that they (should) leave the following week.

      已经安排(计划)让他们下星期动身。

      It has been decided that the meeting (should) be postponed till next Saturday.

      已经决定会议推迟到下周六举行。

      4. 用在 suggestion, motion, proposal, order, plan, idea, advice, request, decision, requiry 等名词后面接的表语从句或同位语从句中, should 也可以省略。例如:

      We all agreed to his suggestion (proposal) that we (should) go to Nanjing for a visit.

      我们都同意他提出的要我们到南京去游览的建议。( should 用于同位语从句中)

      My idea/ motion/ advice/ is that we (should) do more eye exercises every day.

      我的意见是我们每天应该多做眼保健操。( should 用于表语从句中)

      5. 用在“ It is / was necessary/ important/ strange/ incredible ”或“ It is a pity/ a shame/ no wonder ”之后由 that 引导的主语从句中, should 有“应该”、“必须”、“竟然”、“居然”之意。例如:

      It is necessary that he (should) be sent there at once. 有必要马上派他到那里去。

      It is strange that the wheel should turn so slowly.

      真奇怪,这个轮子竟然转动得如此之慢。

      It is a great pity/ shame/ that he should be so conceited.

      真遗憾,他竟会这样自高自大。

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