Britain, as one of the most popular countries with a rich culture，attracted me to take part in a summer camp there this July. 这句话里面的attracted，为什么是用过去式或者过去分词，这个是过去式吗？
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？
When I was 15, my family moved to Washington. I tried skateboarding there, but the locals were far less welcoming. Within a couple of years, I'd given it up. [摘自2021全国卷甲,C]请问上面语境中的句子within a couple of years, I'd given it up为什么使用过去完成时态表达。...
agree 后接不定式的用法（agree to od sth）比较多，如：
He agree to go with us. 他同意和我们一起去。
He agreed to let me go home early. 他同意让我早些回家。
但有时也见到agree on doing sth的用法。如：
He agreed on lending us some money. 他同...
Meanwhile, I found out that with more patience I must make my toys to last. My attitude changed from then on.这是2012年的高考英语新课标卷短文改错中的一句，答案是把 must 改为 might 或 could，但为什么这里用了 to last 呢？这里的 make 是表示“使”吧，它...
2012天津卷阅读B中有这样一句：Some of you would succeed to please me and others would succeed to annoy me.这句有错吗？不是习惯上要用 succeed in doing sth 吗？该句前后语境：It was my belief that if I pushed you as hard as I could, some of you would succeed to please m...