☆宾语从句的时态
一、 主句如果是现在时、将来时或祈使句时，从句可根据实际情况使用任何时态，不受主句影响。
例：I don’t know when he will come back.
Do you know how Amy came to school this morning?
二、 主句如果用一般过去时，从句的时态一般要用相应的过去时态。
例：Kate said that there was a box under the desk.
三、 当从句说明的是客观真理或规律时，无论主句什么时态，从句均用一般现在时。
例：He told me that there are sixty minutes in an hour.
☆宾语从句的语序
宾语从句使用陈述句语序，即“连接词+主语+谓语+其他”。即陈述句作宾语从句时，仍然用原陈述语序；疑问句作宾语从句时，原来的倒装语序要改为陈述语序。
例： Tom advised me that I should take more water.
I don’t know how soon he will come back.
☆练习：
①My cousin will drive me to school today,but I don’t know ________.
A.what he’ll do
B.where he’ll go
C.when we’ll leave
D.why we’ll go there
②---Could you tell me _____for the fruit?---By paying over the Internet.
A.how much will I pay
B.how much I will pay
C.how will I pay
D.how I will pay
③I really don’t know_______.
A.what should I do
B.why he is so nervous
C.how did he run away
D.where has he gone
④--Excuse me. Could you please tell me______ ？
--Sure. Go along this street and turn left. It’s on your right.
A.when I can get to the bookstore
B.when can I get to the bookstore
C.how I can get to the bookstore
D.how can I get to the bookstore
⑤I wonder_____.
A.where does he live
B.how old he is
C.what is he doing
D.how soon will he be back