练习册

  • 练习册
  • 试题
    精英家教网 > 高中英语 > 题目详情
    Since nobody gave him any help，he ________ have done the research on his own.
    (2013·大纲全国，26)
    A．canB．must
    C．wouldD．need
    B
    解析　句意为：既然没人给他帮忙，那他肯定是自己做的研究。分析主从句逻辑关系可知，主句是对从句表达的原因的一种猜测，must have done想必/准是/一定做过某事，符合主从句之间的逻辑关系。can have done用于疑问句或否定句中，表示对过去情况的推测；would have done表示过去将来完成时或用于虚拟语气中；need have done通常用于否定句和疑问句中，表示“本不必做某事却做了”。
    练习册系列答案
    年级 高中课程 年级 初中课程
    高一 高一免费课程推荐！ 初一 初一免费课程推荐！
    高二 高二免费课程推荐！ 初二 初二免费课程推荐！
    高三 高三免费课程推荐！ 初三 初三免费课程推荐！
    相关习题

    科目：高中英语 来源：不详 题型：单选题

    —I regret to say that I failed to rank first in the terminal exam.
    —Come on，nobody ________ win all the time.
    A．shouldB．must
    C．shallD．can

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    When I was a child，I ________ watch TV whenever I wanted to.        (2013·江西，29)
    A．shouldB．could
    C．mustD．need

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    Why _______ you be so stubborn? You should think over my advice on this matter.
    A．mayB．shallC．dareD．must

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    “No student,” the headteacher stressed, “_______ go out of the school after ten o’clock at night without my permission.”
    A．mustB．willC．shallD．may

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    — It’s no easy task to catch a ticket on a website that receives 1 billion clicks daily.
    —I can’t agree with you more.There ________ be errors for every single step.
    A．shouldB．must
    C．willD．can

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    Oh, I'm not feeling well in the stomach. I ________ so much fried chicken just now.
    A．shouldn't eatB．mustn't have eaten
    C．mustn't eatD．shouldn't have eaten

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    When I lived with my roommates in the university, we ________ often talk into the night.
    A．mightB．could
    C．shouldD．would

    查看答案和解析>>

    科目：高中英语 来源：不详 题型：单选题

    With all his money, he ________ worry about a little thing like 5 cents!
    A．can B．must
    C．may D．should

    查看答案和解析>>

    同步练习册答案