there must have been several hundred people present just before the show began.…这是什么语法?

there must have been several hundred people present just before the show began.…这是什么语法?
英语人气:635 ℃时间:2019-10-23 08:26:38
优质解答
1 现在完成时
2 时间状语从句
我来回答
类似推荐
请使用1024x768 IE6.0或更高版本浏览器浏览本站点,以保证最佳阅读效果。本页提供作业小助手,一起搜作业以及作业好帮手最新版!
版权所有 CopyRight © 2012-2024 作业小助手 All Rights Reserved. 手机版