2013高考英语经典陷阱题大串讲·逗号
1. It was his word and action, but not his appearance, _________ moved us deeply.
A. that B. which C. who D. as
【分析】许多同学会受空格前面逗号的影响，认为此句是非限制性定语从句，对前面的his word and action 或his appearance进行说明，从而将答案误选为B、C或D。而事实上，此题的正确答案为A，整个句子是It was… that… 强调句型，强调his word and action, but not his appearance 部分。
判断这类句子的最佳办法是将句子中的It was 及空格同时去掉，看其留下的部分是否还成为一个句子。若是一个完整的句子，则是强调句型；若不能成为完整 的句子，则可能是定语从 句或主语从句。
2. _________ is reported, the project was completed yesterday.
A. It B. As C. This D. What
【分析】许多同学会忽略了句子中间的逗号而认为此题是主语从句，于是将答案误选为A。把It当作句子的形式主语，况且It is reported 也是一个常用句型，读起来也很有英语语感。而事实上，答案选错了，因为在主语从句中的连接词that不能省略。正确答案应该选B，构成一个非限制性定语从句。
3. The purpose of new technologies is to make life easier, __________________ it more
