Such statements are true to an extent. On one hand, it is true that the volatility of any crop is as sensitive to the weather as is the quality of the air we breathe. Thus, the agricultural industry is only successful in climates where growing conditions are relatively at optimum levels. On the...
前面有网友提问《require doing与require to do的用法区别》，与此相关的问题，《现代英语惯用法词典》（李在铭著，现代出版社）在p437页认为下面一句中的 verb-ing 表示被动的意义：To carry out this plan would require increasing our staff by 50%....
...何判断一个句子中的插入语呢？1.What do you think has happened to her这里边do you think是插入语，那么What do you think
of your new department中，do you think还是插入语吗？How do you think…How do you like…又是怎样的呢？3.What do you think that Sally will do...
...com/q-36021.html老师您在这个回答中举例：He is the first person to arrive. = He is the first person to have arrived. = He is the first person that has arrived.不定式作定语，不是通常表示谓语时间还没有发生的将来动作吗？既然是已经到达了，为什么不用 ...