tell（sb) 後面可以跟 that(if, whether, what, when , where, which, why, who, whom, whose, how, whatever, whichever, whenever, however, whoever等）引導的賓語從句。注意事項：
當that 引導賓語從句時, that可以省略。例如：
He said （that） he was leaving for Japan. 他說他要去日本。
2. 引導賓語從句的that在下列情況下一般不省略：
（1）.賓語從句前有插入語。例如：
We hope, on the contrary, that he will stay at home with us. 恰恰相反，我
們希望他和我們呆在家裡。
（2）有間接賓語時。例如：
He told me that he was leaving for Japan. 他告訴我他要去日本。
（3）有兩個或兩個以上that引導的賓語從句時， 第一個that可省略，其餘的不能省略。例如：
He said (that) the book was very interesting and that(不省略) all the
children like to read it.他說那本書很有趣，所有小孩都喜歡讀。
（4）在“it(形式賓語)+補語”之後時。例如：
I think it necessary that he should stay here. 我們認為他有必要留在這裡。
（5）that從句單獨回答問題時。例如：
—What did he hear? 他聽說了什麼事？
—That Kate had passed the exam. (他聽說)凱特考試及格了。
（6）位於句首時。例如：
That our team will win, I believe. 我相信我們隊會贏。
3. 賓語從句的語序是陳述語序，即主語在前，謂語在後。例如：
She didn"t tell me when she would go. 她沒告訴我她什麼時候要去。
It was already impossible to tell where the bullet had entered.已經無法判斷子彈是從哪裡打進來的。
4. 賓語從句的主句如果是現在時態的話,從句根據句子意思使用任何時態.例如：
She says (that) she works from Monday to Friday. 她說她從週一至週五上班。
She says (that) she will leave a message on his desk. 她說她要在他桌子上留個便條。
She says (that) she has never been to Beijing. 她說她從來沒有去過北京。
She says (that ) Tom was ill yesterday. 她說湯姆昨天病了。
5. 賓語從句的主句如果是過去時態,那麼從句要使用過去的某種時態。例如：
He said （that）there were no classes yesterday afternoon. 他說昨天下午沒有課。
He said (that) they were having a meeting at that time. 他說他們那時正在開會。
She said (that) she had never been to Mount Emei. 她說她從來沒有去過峨嵋山。
6. 不管賓語從句的主句是什麼時態,只要從句部分是一般真理、名言警句等的話,那麼從句都是使用一般現在時。例如：
He said that light travels much faster than sound. 他說光比聲音傳播得快
tell（sb) 後面可以跟 that(if, whether, what, when , where, which, why, who, whom, whose, how, whatever, whichever, whenever, however, whoever等）引導的賓語從句。注意事項：
當that 引導賓語從句時, that可以省略。例如：
He said （that） he was leaving for Japan. 他說他要去日本。
2. 引導賓語從句的that在下列情況下一般不省略：
（1）.賓語從句前有插入語。例如：
We hope, on the contrary, that he will stay at home with us. 恰恰相反，我
們希望他和我們呆在家裡。
（2）有間接賓語時。例如：
He told me that he was leaving for Japan. 他告訴我他要去日本。
（3）有兩個或兩個以上that引導的賓語從句時， 第一個that可省略，其餘的不能省略。例如：
He said (that) the book was very interesting and that(不省略) all the
children like to read it.他說那本書很有趣，所有小孩都喜歡讀。
（4）在“it(形式賓語)+補語”之後時。例如：
I think it necessary that he should stay here. 我們認為他有必要留在這裡。
（5）that從句單獨回答問題時。例如：
—What did he hear? 他聽說了什麼事？
—That Kate had passed the exam. (他聽說)凱特考試及格了。
（6）位於句首時。例如：
That our team will win, I believe. 我相信我們隊會贏。
3. 賓語從句的語序是陳述語序，即主語在前，謂語在後。例如：
She didn"t tell me when she would go. 她沒告訴我她什麼時候要去。
It was already impossible to tell where the bullet had entered.已經無法判斷子彈是從哪裡打進來的。
4. 賓語從句的主句如果是現在時態的話,從句根據句子意思使用任何時態.例如：
She says (that) she works from Monday to Friday. 她說她從週一至週五上班。
She says (that) she will leave a message on his desk. 她說她要在他桌子上留個便條。
She says (that) she has never been to Beijing. 她說她從來沒有去過北京。
She says (that ) Tom was ill yesterday. 她說湯姆昨天病了。
5. 賓語從句的主句如果是過去時態,那麼從句要使用過去的某種時態。例如：
He said （that）there were no classes yesterday afternoon. 他說昨天下午沒有課。
He said (that) they were having a meeting at that time. 他說他們那時正在開會。
She said (that) she had never been to Mount Emei. 她說她從來沒有去過峨嵋山。
6. 不管賓語從句的主句是什麼時態,只要從句部分是一般真理、名言警句等的話,那麼從句都是使用一般現在時。例如：
He said that light travels much faster than sound. 他說光比聲音傳播得快