He has been running______.A．since two hoursB．for two o’clockC．two hours agoD．for
题型：不详难度：来源：
He has been running______.| A．since two hours | B．for two o’clock | | C．two hours ago | D．for two hours |
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答案
| D |
解析
试题分析：在表示时间时，since后接时间点，表示自从……以来；for后面接一段时间，用于完成时态；ago用在一段时间之后，表示过去某个时间。句意：他已经跑了两个小时。结合语境可知选Ｄ。
点评：该题型是属于英语考试的基础题型，是必考内容。英语单词同汉语一样具有一词多义，一词多性的特点。解答此类问题首先要理解每个选项的基本含义，并注意交叉含义间的区别，了解其特殊用法，然后结合语境选择正确答案。 |
举一反三
You can watch TV ______, but you can’t watch it ______ a long time.| A．one, at | B．one, for | C．first, for | D．first, at |
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There are _____________ doctors and nurses in that hospital.| A．thousand | B．two thousand | C．two thousands | D．thousands of |
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There are_______ seasons in a year． Winter is_________season．| A．fourth; the fourth | B．fourth; four | C．four;the fourth | D．four;the four |
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---The number of the students in our school is about nine _____. ---I see. ______of them are boys.| A．hundred; Two thirds | B．hundred ; Two third | | C．hundreds; Two thirds | D．hundreds; Two third |
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the students in this school is about four thousand, of them are boys．| A．A number of, three fifth | B．The number of, three fifths | | C．A number of, three fifths | D．The number of, three fifth |
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