強調句型是一種特殊句式，用於表示說話者強烈的感情或意願。強調就是通過某種手段使句中某一部分所包含的信息比一般情況下顯得更重要。強調句型的結構如下：
1基本句型：It is/was +被強調部分 +that/who +其他部分
It is by listening to and understanding each other that problems between parents and children can be settled.
只有通過相互傾聽和相互理解，孩子和父母之間的問題才能被解決。（強調方式狀語）
It was Paul who/that broke the window just now. 剛剛是保羅打破了窗戶。（強調主語）
2 一般疑問句形式：Is/Was it + +被強調部分 +that/who +其他部分？
Was it because he behaved badly that he was punished by his teacher?
他是因為不守規矩而受到了老師的懲罰嗎？（強調原因狀語從句）
3 特殊疑問句形式： 疑問詞+is/was it that +其他部分? 疑問詞就是被強調部分。
When was it that he made up his mind to take this course? 他是什麼時候決定學這門課程的？
4 通常強調句子的主語賓語或狀語
被強調部分可能是一個單詞或詞組，也可能是一個長句子。但是強調謂語動詞通常用助動詞do,does, did.
It was I that/who saw him in the street yesterday afternoon.昨天下午是我在街上看見他的。（強調主語）
It was him that/who I saw in the street yesterday afternoon. 昨天下午我在街上看見的就是他。（強調賓語）
It was in the street that I saw him yesterday afternoon昨天下午我是在街上看見他的。（強調地點狀語）
He did write to you last week. 他上星期確實給你寫信了。（強調謂語動詞）
Tom does study hard now. 湯姆現在學習確實努力。（強調謂語動詞）
5主謂一致
當被強調部分是主語時要注意主謂一致。
It is I who am responsible for this project. 是我負責這個項目。(am和I主謂一致）
It was not you but he that was asked to gather information for the company. 不是你而是他被要求為公司收集信息。（was是和he相呼應的)
6 含not..until結構的強調句
It was not until nearly a month later that I received the manager’s reply. 直到將近一個月後我才收到經理的回覆。（強調時間狀語）
7 強調句型和其他句型的區別
強調句判斷：將It is/was和that/who去掉，再將被強調部分還原至句子本來的位置，如果仍是一個完整的句子，就是強調句。反之不是。例如
It was six years ago that he went to Tokyo. 他就是六年前去東京的。
去掉It was和that後，He went to Tokyo six years ago仍是一個完整的句子It is/was和that這就是一個強調句。
8 強調句可以和其他句子混合使用
It is the teacher who taught me when I was a child that I am going to visit.我要去拜訪的人是我小時候教我的老師。
（強調賓語，賓語裡teacher帶一個定語從句）
It was not until the beginning of the meeting that he realized what I told him was the only possible way to deal with the problem.
直到會議開始，他才意識到我告訴他的是解決這個問題的唯一可能的方法。
（強調時間狀語，謂語realized後面賓語從句，而這個賓語從句的主語是what I told him，是個主語從句）
It was what he did rather than what he said that annoyed me. 惹惱我的不是他說的話還是他做的事。
（強調主語，主語是從句，且用了A rather than B結構。）