by the end of 与at the end of

问题描述:

by the end of 与at the end of
完型填空有一题
the population will pass six billion by the end of the century .
为什么不用at the end of 呢

这一对短语的意思都是“在…的末了”、“在…的一端”,意义上相似,但使用场合有所不同. 一般说来,at the end of用于表示具体事物或场所的场合,它也可以用来表示比喻意.例: The school is situated at the end of th...