1. that名詞性從句。
　�、僖龑�(dǎo)賓語(yǔ)從句。及物動(dòng)詞后的引導(dǎo)詞that可省略。
　　I didn't expect (that) he could win the championship.
　　The teacher pointed out that Tom was not working hard enough.
　�、� 引導(dǎo)主語(yǔ)從句。通常采用it作形式主語(yǔ)的句型。
　　That the earth goes around the sun is known to everyone.
　�。↖t is known to everyone that the earth goes around the sun.）
　�、垡龑�(dǎo)表語(yǔ)從句。
　　The trouble is that we are short of money.
　�、芤龑�(dǎo)同位語(yǔ)從句。
　　引導(dǎo)同位語(yǔ)從句的that和引導(dǎo)定語(yǔ)從句的that是不同的。前者只起語(yǔ)法作用，在從句中不作任何成分；而后者在定語(yǔ)從句中作主語(yǔ)、賓語(yǔ)或表語(yǔ)。舉例說(shuō)明：
　　The news that he resigned from office surprised us.
　　The idea that he holds is very common nowadays on campus.
　　2. that引導(dǎo)狀語(yǔ)從句
　�、僖龑�(dǎo)目的狀語(yǔ)從句。
　　Bring it nearer that I may see it better.
　　②引導(dǎo)結(jié)果狀語(yǔ)從句。
　　What have I done that he should be so angry with me?
　�、垡龑�(dǎo)原因狀語(yǔ)從句。
　　I am afraid that I will fail in the driving test.
　�、芤龑�(dǎo)讓步狀語(yǔ)從句。意為“雖然、盡管”。
　　Difficult that/as the task was, they managed to accomplish it on time.
　　⑤引導(dǎo)條件狀語(yǔ)從句。意為“假使、假設(shè)”。
　　Supposing that you were in my position, what would you do?
　　On condition that you were lost in the desert, you should ask for help as soon as possible.
　　3. 引導(dǎo)強(qiáng)調(diào)句。
　　It is Mrs. White that makes the decision in her family, not her meek little husband.
　　It is an ill wind that blows nobody good.