Section Ⅳ Grammar & Writing
状语和状语从句
阅读下列句子并体会黑体部分的用法
1．English spread across the world over hundreds of years because of trade，exploration and business.
2．Sometimes it is difficult for British and American people to understand the Australian accent.
3．A few years ago a wellknown English author was signing copies of his books in a Sydney bookshop.
