He is trying to find out whether the medicine works.
概念：在复合句中做宾语的句子叫做宾语从句．
宾语从句：
1.关联词 2.语序 3.时态 4.人称 5.if与whether的区别
1.Can you tell me C____?
A. how can I get there B. where is the post office C. how to get to the drugstore
Shanghai yesterday.
Do you know (that) there is going to be a football match tonight?
Please tell me how long I can keep this book.
主句是一般过去时,从句一般是过去时态的一种：
2. Do you know__C__?
A. who is he B. where does he live C. what he is talking about
3. I don’t knowA ___ I can pass the
exam. A. if B. which C. what
SUCCESS
. Can I finish it by myself ? (The old man didn’t know)
The old man didn’t knowheif_____could finihsihmseiltf by _____ .
4.How long have you waited for me? (He asked his f He asked his friends how tlhoenyg _____ had waihtiemd for
If 和 whether的区别 1）Whether 后能跟 or not, if 不行。
I’d like to know whether he will come or not. 2）Whether 后能加 to do, if 不行。
He doesn’t know whether to work or play. 3）在介词后只能用whether不能用if.
一般现在时
一般过去时
These flowers are from Guangdong. He said.
He said
these flowers were from
Guangdong.
一般过去时
过去完成时
Did she sleep well last night? David asked.
现在进行时
语法重点：宾语从句
一、概念 由一个句子充当宾语，我们称之为 宾语从句。 e.g. I know the answer.(名词做宾语)
I know that Tom gets thFra bibliotek answer.
(句子做宾语, 叫做宾语从句）
二、宾语从句的关联词
*陈述句做宾语，用that引导, that可省略；
I know （that）the Water Festival is reall
三、宾语从句的语序
永远都是陈述句语序
e.g. He asked me who was the boy. ()
He asked me who the boy was.( )
四、宾语从句的时态变化
主句是一般现在时,从句可以用任何时态.
I think (that) she is a clever girl. We all know (that) they reached
现在完成时
过去完成时
宾语从句为客观事实或真理时，从句均用一 般现在时
Dad told me that the sun rises in the east. Teresa told her son that leaves turn yellow in autumn.
五、宾语从句的人称变化
人称代词要随合理的逻辑而自然变化.
THANK YOU
2019/6/26
4. I don’t know tomorrow.
heC_________
he_________ , I’ll let you know.
A. comes, comes
B. will come, will come
C. will come, comes
过去进行时
I saw river.
they were swimming in the
一般将来时
过去将来时
There will be a meeting in five days. Jack didn’t know.
Jack didn’t know meeting
there would be a
in five days.
He asked me, “Do you like playing baske He asked me if I liked playing basketbal
He asked me, “Where do you play basketb He asked me where I played basketball.
re going to pick apples for the farmers. The student tudents said____t_hweere going to pick apples for the fa
y
ll you go there with your parents? (He asked her) asked her if __s_h_e_would go there withhe_r____parents.
*一般疑问句做宾语, 用if或whether引导； I wonder if they'll have the races again next year. *特殊疑问句做宾语, 用该特殊疑问词引导。 I wonder where we should go next .
He said, “I like playing basketball.” He said that he liked playing basketball