一般情況下作從屬連詞引導(dǎo)名詞性從句，從句可以用現(xiàn)在分詞做主語，謂語用三單。引導(dǎo)名詞性從句，狀語從句和強調(diào)句。

　　1、that名詞性從句：

　　①引導(dǎo)賓語從句。及物動詞后的引導(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.

　　②引導(dǎo)主語從句。通常采用it作形式主語的句型。

　　That the earth goes around the sun is known to everyone.

　　（It is known to everyone that the earth goes around the sun.）

　　③引導(dǎo)表語從句。

　　The trouble is that we are short of money.

　　④引導(dǎo)同位語從句。

　　引導(dǎo)同位語從句的that和引導(dǎo)定語從句的`that是不同的。前者只起語法作用，在從句中不作任何成分；而后者在定語從句中作主語、賓語或表語。舉例說明：

　　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)狀語從句：

　　①引導(dǎo)目的狀語從句。

　　Bring it nearer that I may see it better.

　　②引導(dǎo)結(jié)果狀語從句。

　　What have I done that he should be so angry with me?

　　③引導(dǎo)原因狀語從句。

　　I am afraid that I will fail in the driving test.

　　④引導(dǎo)讓步狀語從句。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.