I had no idea of the machine...

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/05/01 19:25:20

I had no idea of the machine...
I had no idea of the machine ____ already.
A.to be tested B.having been tested
C.testing D.tested
This drug,when ____ by mouth,is ineffective.
A.giving B.give
C.gives D.given
这两题,我的答案是B D,B,求大虾指点原因.

第一题选D 这个题的考点是你要分析句式 machine 后面的词组要表达machine的状态而且machine和test之间是被动的所以 be tested 做表语可省略be
第二题也是要分析句式并翻译主句是：this drug is ineffective .整个句子你可以把它调整成 when this drug give by mouth is ineffective . 这个药放在嘴里的时候就失去了效力.表达的是一个客观的现在,不存在时态问题,this drug give by mouth 是一个固定搭配
再问：哦，原来如此。第二题我明白了。可是第一题，我也知道是被动啊。B选项不仅是被动，而且还强调已经被测试过了，翻译成我不知道这台机器是不是已经被检测过了，为什么不可以啊？
再答：一道题不懂的时候，除了寻求别人的帮助，还要自己去翻阅相关的知识点，才能真正对这个题或者对这类型的题吃透

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