it is/was… that強(qiáng)調(diào)句式
如果強(qiáng)調(diào)的是主語而且是人，也可用who。
例如：強(qiáng)調(diào)主語
It was the training that he had received in that well-known trans-national company that made him such a good sales manager.
It is they who have made wise decisions in investment.
強(qiáng)調(diào)賓語
It is work that they really want, not charity.
強(qiáng)調(diào)其它成分
It is because my present job is boring that I decide to change it.
It is because she is too inexperienced that she does not know how to deal with the situation.
It was not until very recent times that was the theory of “probability” looked upon as hardly more than a curiosity.（該句為強(qiáng)調(diào)句式It was not until + 強(qiáng)調(diào)部分 + that + 句子其余部分；句子的意思是：正是直到最近，概率論差點(diǎn)被看成一種新奇理論。）
問句形式
Was it for this that we suffered and toiled?
Is it because of money that they quarried?
It must have been, It might be, It will be結(jié)構(gòu)
It must have been our new boss that you bumped into yesterday.
It might be his poor children that he is thinking of.
It will not be you who will have to take the blame for this.
如果強(qiáng)調(diào)的是主語而且是人，也可用who。
例如：強(qiáng)調(diào)主語
It was the training that he had received in that well-known trans-national company that made him such a good sales manager.
It is they who have made wise decisions in investment.
強(qiáng)調(diào)賓語
It is work that they really want, not charity.
強(qiáng)調(diào)其它成分
It is because my present job is boring that I decide to change it.
It is because she is too inexperienced that she does not know how to deal with the situation.
It was not until very recent times that was the theory of “probability” looked upon as hardly more than a curiosity.（該句為強(qiáng)調(diào)句式It was not until + 強(qiáng)調(diào)部分 + that + 句子其余部分；句子的意思是：正是直到最近，概率論差點(diǎn)被看成一種新奇理論。）
問句形式
Was it for this that we suffered and toiled?
Is it because of money that they quarried?
It must have been, It might be, It will be結(jié)構(gòu)
It must have been our new boss that you bumped into yesterday.
It might be his poor children that he is thinking of.
It will not be you who will have to take the blame for this.