In the past few years ,many buildings have be built in my hometown.为什么用be不用别的系动词
问题描述：
In the past few years ,many buildings have be built in my hometown.为什么用be不用别的系动词
The trip is going to last three weeks.为什么last不加ed?
答
第一个句子不对,应该是have been built, 首先语态是被动语态,所以是be + 过去分词的形式,而时态是现在完成时,所以应该用have been第二句last是持续的意思,旅行将要从持续三周时间.是现在进行时表示将来可能发生的事,...