什麼是賓語從句？我們來舉例說明：
I/ know/ him.(主+謂+賓)I/ know/ who he is.(主+謂+賓語從句；who作賓語的引導詞，he作從句的主語，is作從句的謂語。)賓語從句定義：作賓語的句子就是賓語從句。
賓語從句由哪些要素組成呢？一般賓語從句是需要引導詞，語序，時態三個要素組成。
引導詞：賓語從句中胡引導詞有：連接詞、連接代詞、連接副詞a. 連接詞：that, if/whetherb. 連接代詞：who(ever), whom(ever), which(ever), what(ever)c. 連接副詞：where, when, why, howe.g. 1. They are good doctors. He told us. -->He told us that they were good doctors. 2. He will come tomorrow. I have heard.
-->I have heard that he will come tomorrow.
3. Does your sister get up early? Do you know?
-->Do you know if/whether your sister gets up early?
4.Do animals have the same senses as humans? I often wonder.
-->I often wonder if/whether animals have the same senses as humans.
總結：當從句原來椒一般疑問句時，變成賓語從句用if/whether引導。
5. When did he buy this new bike? Could you tell me?
-->Could you tell me when he bought this new bike?
6.Where will the lecture be given? I don't know.
-->I don't know where the lecture will be given.
總結：當從句原來是特殊疑問句時，變成名詞性賓語從句時還用原來的特殊疑問詞來引導。
2.語序
賓語從句必須要用陳述句語序，有且僅有詞一個引導詞，賓語從句中的引導詞除that外，其他胡引導詞均不可省略。其結構為：引導詞+陳述語序。
e.g. 1. He told us thatthey were good doctors.
2.Could you tell me when he bought this new bike?
3. Do you know if/whether your sister gets up early?
3.時態
1.如果主句是現在的時態，從句的時態可根據實際情況而定。
e.g. 1. I know he lives here.
2. I know he lived here ten years ago.
3. I have heard that he will come tomorrow.
2.如果主句是過去的時態，那麼從句一定要是相對應的過去的某一種時態。
e.g. 1. I know who lived here.
2. I saw she was talking with her mother.
3. He asked whether his father would come back tomorrow.
4. He said that he had seen it.
3.當從句是客觀真理、定義、公裡、定理時用一般現在時。
e.g. 1. The teacher said that the sun travels around the earth.
賓語從句你學會了嗎？加油哦！