...rd national ecological security.问:我对这个长句是这样理解划分的:此句分三个并列句1. We must make all natural ecosystems more stable.2.We must make all natural ecosystems be able to provide services
better.3.We must make all natural ecosystems safeguard national ecological
sec...
...e passed away. I regret not having sent earlier.请教老师,现在分词的完成形式表达的动作发生在主句谓语动作之前。请问这句中,not having sent后悔没有发包裹,是后悔没有在arrived 之前发还是在他passed away 之前发?还是这两者之前?我认...
... Pacific, a long way west
of Samoa. 此句中a long way west of Samoa这样的结构很常见,但一直不清楚在句中是作什么成分,是地点状语么;a long way与west of Samoa是什么关系,这里的west是名词、形容词还是副词?非常谢谢各位老师解惑!
辅导班的一道题:
The windows are closed. Who ________ them?
A. close B. closed C. is closing D. has closed.
老师说答案为D 。我觉得选B未尝不可,因为,前一句已经说了窗户现在是关着的。后一句只问过去谁把窗户打开即可...
He gained 10 kilograms last year.(对划线部分提问)我的答案是:How heavy,即 How heavy did he gain last year?标准答案是:how much,即 How much did he gain last year?既然句子里是10 kilograms是可数的,为什么不用 how many 呢?谢谢老师指点。