2011届高考英语语法解题专项复习21
1. It was not until 1920 _______ regular radio broadcasts began.
A. while B. which
C. that D. when
答:C.在强调句型中,被强调的部分是时间状语或地点状语时,后边不能用when或where,须用that.所谓强调句型就是强调句中的某个成分.如:I saw him at the station yesterday.