高三英语替代词

高三英语替代词内容摘要：

ause 这个句型中 , it 指时间，而且表示时间的词语前没有介词 (时间一般为具体时间 )。 主句中的谓语动词和从句中的谓语动词在时态上一般是一致的，主句是 will be， when从句用一般现在时代替将来时。 It was already 8 o„clock when we got home . It was the next morning when we finished our work . It will be midnight when they get there . It + be + 时间 + thatclause 这个句型是个强调句型。 例如： It was two years ago that he made an important invention . (原句是：__________________________________) It was at 5 o’clock that he practised playing the violin in the morning . (原句是：________________________________) 比较： It was 5 o‟clock when he started in the morning . (5 o„clock前没有介词，这是个定语从句 ) He made an important invention two years ago . He practised playing the violin at 5 o„clock in the morning . •It + be + time + thatclause 这个句型属虚拟语气结构，不管主句中用的是 is 或 was ， that从句都须用动词的过去式或 should + 动词原型 (但不及用过去式普通 )，在 time之前有时可加上 high或 about 以加强语气。 例如： It is time(that)we handed in our exercises . (= It is time that we should hand in our exercises .) It is high time (that ) she wrote a letter to her boyfriend . •It / This / That + the first(second , third …) time + thatclause 这个句型表示截止到说话时为止的某人的一种经历，关键是注意 time前有序数词，主句是 is 时 ，从句要用现在完成时；如果主句用一般过去时 was ，则从句须相应地用过去完成时。 例如： This is the first time (that) these Europeans ____________the Great Wall . It was the fifth time (that) I ___________a friendly visit to Africa . had paid have visited There起始的句型归纳： 1） there live/stand/lie/exist… Th。