...spoken我选择了mustn't have spoken,而正确答案是A。并且给出的解析是:1.没有mustn't have done 这个结构。2. couldn't have
done 能够表示当时绝不可能。就此我想请网站各位专家老师问题:1. mustn't have
done 没有此结构吗?但是我在 google...
...is first quarter, China had about 1,100 or so.
e-commerce websites这道题的正确选项是A,但是"截止到某一段时间"不是应该用完成时吗?原句和B选项我也不知道错哪里了……另外by the first
quarter of this year和by the end of the first quarter of this year我觉...
...a clearer idea of how the Gullah communicate to each other. (这是连着的一长段句子,里面有好几处学生有疑问:1.frequent samples of Gullah as used 此处不理解 2.黑体字to的用法 3.introduces to后接individual 怎么后面还有个songs ,还是说断句是这样...
关于前面讨论的“it is +形容词+ of sb to do sth”句式,我也有一个问题,那就是其中的不定式可以用完成式吗?比较:It was kind of them to help me. It was kind of them to have helped me. It was nice of you to come. It was nice of you to have come.&...