1、强调句型为了强调句子的某一成分（通常是主语、宾语、或状语），常用强调句型：It is (was) +被强调部分+that(who)… 表示强调的 it 在句子中作主句的主语；被强调部分可以是主语，宾语，表语或状语；强调的主语如果是人，that和who都可用。如： Last night I saw a film in the Youth Palace. 强调主语：It was I that (or: who) saw a film in the Youth Palace last night. 强调宾语：It was a film that I saw in the Yo
2、uth Palace last night. 强调地点状语：It was in the Youth Palace that I saw a film last night. 强调时间状语：It was last night that I saw a film in the Youth Palace. 另外，还要注意下面几点： 1）在强调主语时，that 后的谓语动词要与被强调者保持人称和数的一致。如： It is I who am a teacher. 2）即使被强调的主语是复数，主句中的谓语动词也用单数。如： It is they who often help me with my les
3、sons. 3）在强调时间、地点、原因或方式状语时，不能用when，where，why或 how ，而要用that 。如： It was because her mother was ill that she didn't go with us. It was only when I reread his poems recently that I began to appreciate their beauty. It was the house that the murder happened. 4）在强调not … until 结构中由 until 短语（或从句）表示的时间状语时，要
4、用固定的强调句型：It is(was) not until ...that... 注意此时原句的not…until要变成not until ，that 从句中的谓语动词要用肯定式。如： My father didn't come home until 12 o'clock last night. It was not until 12 o'clock last night that my father came home. I didn’t realize she was a famous film star until she took off her dark glasses. It
5、was not until she took off her dark glasses that I realized she was a famous film star. 5）原句的谓语动词如果是现在或将来的各种时态，用It is…that (who)…；如果原句谓语动词是过去各种时态，则用It was… that(who)… 6）在强调一般疑问句中的某一成分时，主句要用一般疑问句的语序。that后面的原句其余部分在移走了被强调部分后词序及词形都不可以改动。如： Did this happen in Beijing? Was it in Beijing that this happen
6、ed? 7）特殊疑问句中只有疑问词可以强调，其强调结构是“疑问词+is (was) it that...? " 如： Where were you born? Where was it that you were born? 8）强调句型容易和句型It is/was+名词+that名词从句混淆。如果把构成强调句型结构的词It is (was) … that(who)… 去掉，被强调部分归位后，应该能够形成一个完整 的句子（这也是判断是否是强调句型的方法）。但后者的It is/was…that 是不可去掉的，否则that前的名词就找不到位置，原句也不再成立，如下面这个句子如去掉It is/was
7、…that就不再完整： It was the rule of the school that the pupils should wear their school uniforms.
