Most of the patients are elderly people with chronic articular diseases, like arthritis and ocular problems in particular. 大多数患者是患有慢性关节疾病的老年人，特别是关节炎和眼部问题。请问这句话里面and是并列的哪两个成分？
...是“结果是”“被证明是”等。如：The meeting turned out to be a bit of a marathon. 这场会议有点像马拉松。His advice turned out to be no use at all. 结果证明他的建议一点儿用处都没有。The job turned out to be harder than we thought. 这工作结果比我们...
Do you think it is good to study（study) English by listening to English songs?这里的to study 是不是也可以用studying来替代？动名词做主语也常见用it作其形式主语呀，如：It is interesting planning a holiday. It is no good complaining. &...
...消了，没有签成。我知道这么写是对的： We would have got it signed if we had been at the event, but it didn't happen.那么如果用when来写，该怎么写呢？是否是：We were planning to get it signed when we were at the event, but it didn't happen.（但是这句话w...
...dent Assessment (PISA), a triennial test of 15-year-olds around the world, and the Trends in International Mathematics and Science Study, which measures ten- and 14-year-olds.ten- and 14-year-olds.是"10-14岁的孩子"还是"10和14岁的孩子"？谢谢老师。
That “old” would vary between nations makes sense, especially between more and less developed countries, with differences in education, death rates, access to health care and life expectancy.大概的成分分析，不太理解后边especially和between and为什么一起搭配?
... very far to have their children immunized, so we're trying to be creative,and looking at ways to move our polio eradication efforts forward in those two remaining endemic countries.在 looking at ways to move our polio eradication efforts forward...中： to mover our...是不定式作目的状语...