1. At that time people would starve if food was difficult to find, especially during the cold winter months.在当时,如果食物难以找到,人们就会挨饿。特别是在寒冷的冬季。
类似于be difficult to do结构中,若主语与其后的...
1.某些连系动词(如look,sound,smell,feel,taste,prove等)要用主动形式表示被动意义,因为连系动词为不及物动词,它们没有被动语态形式。如:
The water__ cool when I jumped into the pool for morning exercise.