如何学好英语语法现在完成时呢

下面小编跟大家一起了解如何学好英语语法现在完成时呢。希望对大家的学习有所帮助。
　　There have been a lot of inquiries. 提出的询问有很多。
　　There have been a lot of enquiries. 进行过许多调查。
　　There have been many such accidents. 已发生了好几起那样的事故。

　　There have been several break-ins this year. 今年发生了好几起强行入室事件。
　　There has been an increase in the number of road incidents recently. 近交通事故的数目有增加。
　　There have a lot of bad luck lately. 发生了一些变化。
　　There has been little business between the two companies. 这两家公司之间几乎没有什么业务往来。