...ars are tested for defects before they are sold.
假若要把时间状语从句 before they are sold 改为短语,可以是 before sold 吗?即省略从句的主语(因为它与主句主语相同)和动词are。但老师说给出的答案是 before being sold。请问如果写成 before so...
for example 表示举例时,可放在举的词语之前或之后,比如: Many people want to live big cities, for example Jim. 很多人都想住在大城市,比如吉姆就是一例。 You make too many mistakes—lots of spelling mistakes, for example. 你的错误太多——比...
在我查到的例句中,years of 后接不可数名词作主语时,它的谓语用是用复数的,下面是我搜集到的一些例句:Years of failure have sapped him of his confidence. Years of anxiety have lined her brow with deep furrows. Years of war have left their mark on these prett...