The intensity of our protein obsession can only be understood as part of a wider series of diet battles that go back half a century. 这里没有用go back to是因为这个短语是一般接具体的时间点,这里half a century做时间状语表示这半个世纪以来都是如此?
...ures of 25, in seven custom-built batch reactors – conditions similar to the in situ formation conditions.这个句子中用了两个横杠,第一个横杠是用于连接不可分割的两个词,第二个是啥意思呢,相当于whose吗?而且condition和similar之间感觉缺少系动词...
看到几个句子:They forgot that one has to be for something and not just against everything.A desire to sell gold appeared to have been worsened by thinking that concerns about the Greek economy have somewhat eased.主句都是过去式,从句不需要为过去的某种时态吗?尤其是宾...
If you get 600 in your TOEFL test, there is a good chance that you can enter the University of British Columbia.这里为什么不可以是there will be? 或者 it will be ?
Even rates of participation in walking and cycling are declining. All of which suggests we should be marched to the nearest gym. 这句话中的all of which为什么用which,是什么用法?为什么在两个句子中?