用作定语
▲～+n.
 In English study, intensive reading must be combined with extensive reading.在英语学习中,精读必须与泛读结合起来。
He possesses an extensive knowledge of banking.他具有广博的银行业务知识。
We're having extensive repairs done to the building.我们正大面积翻修这栋房子。
The house has extensive grounds.这栋房子有广阔的空地。
用作表语
▲S+be+～
 The damage the storm caused is extensive.这场暴风雨造成了大规模的损失。

extensive, extended
extensive表示“广泛的”,强调包含的内容多而广; 而extended则表示“延长的”。

［同义词］   broad, huge, large, vast, wide
［反义词］   narrow, restricted