-Has the teacher finished marking the exam papers?-Sorry,I don't know.I just saw that he---(mark)them in the office yesterday .是填was marking还是marked可是yesterday是标志着前面的see是过去时,而且这是一个从句,不是一个

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/11 12:32:22
-Has the teacher finished marking the exam papers?-Sorry,I don't know.I just saw that he---(mark)them in the office yesterday .是填was marking还是marked可是yesterday是标志着前面的see是过去时,而且这是一个从句,不是一个

-Has the teacher finished marking the exam papers?-Sorry,I don't know.I just saw that he---(mark)them in the office yesterday .是填was marking还是marked可是yesterday是标志着前面的see是过去时,而且这是一个从句,不是一个
-Has the teacher finished marking the exam papers?
-Sorry,I don't know.I just saw that he---(mark)them in the office yesterday .
是填was marking还是marked
可是yesterday是标志着前面的see是过去时,而且这是一个从句,不是一个短语,与see sb doing和see sb do没有关系吧~

-Has the teacher finished marking the exam papers?-Sorry,I don't know.I just saw that he---(mark)them in the office yesterday .是填was marking还是marked可是yesterday是标志着前面的see是过去时,而且这是一个从句,不是一个
was marking,强调过去那个时候正在进行.

是marked,因为前面是finished,从yesterday 也可以看出

固定搭配:see sb. do sth.和 see sb. doing sth.
所以此处填原形mark 或者 marking。结合选项再看看~!

是填was marking---------------