英语什么是分裂句谢谢

英语什么是分裂句
谢谢

什么是分裂句
分裂句是以it为引导词的强调句型.它的结构形式是：it + be的一定形式+中心成分+that-/who-分句.例如：
It was Jane that / who called this morning.
正是简今天上午来电话了.
It was a parcel that she brought him.
她带给他的是包裹.
分裂句是由普通陈述句转换而来的.通过这种结构可以强调除谓语动词以外的大多数句子成分.例如：
John gave Mary a handbag at Christmas.
约翰在圣诞节给玛丽一个手提包.
根据上下文和语义意图,说话人可以通过分裂句分别强调主语、间接宾语、直接宾语、状语、使之成为信息中心.例如：
It was John that / who gave Mary a handbag at Christmas.
正是约翰在圣诞节给了玛丽一个手提包.
It was Mary that John gave a handbag (to) at Christmas.
是玛丽在圣诞节得到了约翰给的手提包.
It was a handbag that John gave Mary at Christmas.
约翰在圣诞节给玛丽的是一个手提包.
It was at Christmas that John gave Mary a handbag.
约翰是在圣诞节给玛丽一个手提包的.
分裂句的谓语动词be还可以采取复杂形式.例如：
It may have been at Christmas that John gave Mary a handbag.
约翰可能是在圣诞节送给玛丽一个手提包的.
It might have been John who gave Mary a handbag.
可能是约翰送给玛丽一个手提包.
分裂句可以强调多种多样的状语成分,例如强调时间状语、地点状语、方式状语等.例如：
It was when she was about to go to bed that the telephone rang.
正是在她要去睡觉的时候,电话铃响了.
It was in Shanghai that I first met Philip.
我是在上海第一次遇见菲利浦的.
It was very reluctantly that she agreed to help.
她非常勉强地同意帮忙.
也可以强调由because 引导的原因状语分句.例如：
It was because he was badly ill that he delayed the work.
正是由于他病得很厉害,他才延误工作的.
主语补语通常不可以用作分裂句的中心成分,如在规范英语中通常不说：
＊It is beautiful that she is.
＊It is chairman of the Committee that he is.
但是宾语补足语是可以这样用的：
It is chairman of the committee that they elected him.
他们选他做的是委员会主席.
It is green that they have painted the wall.
他们已经把墙刷成的是绿色.