时间状语从句与条件状语从句?副词的位置?现在完成时用法?宾语从句的用法?

一)宾语从句中的时态.
1.如果主句的时态是一般现在时或一般将来时,从句的时态则根据具体情况或具体意义来确定.如：
① I don't know when he came back.
② Do you know where they will go this summer holiday?
③He is worried about whether he has passed the English exam.
④ Please tell us what we should do next,OK?
⑤ Will you please tell me how I can get to the post office?
2.如果主句的时态是一般过去时,从句的时态则相应地使用一般过去时/过去将来时/过去完成时/过去进行时等.如：
① He said that he didn't find your lost pen.
② My parents told me that they would go to Beijing.
③ The policeman asked him what he was doing at midnight yesterday.
④ I told you yesterday that I had returned your book.Why do you ask for it again?
3.如果宾语从句所叙述的是客观真理、自然现象、名言警句或谚语等,不管主句是什么时态,从句都用原时态.如：
① Our geography teacher told us that the earth goes around the sun.
② When I was young,my father often told me that knowledge is power (力量).
(二)牢记宾语从句的语序是陈述句语序,即“连接词＋主语＋谓语＋其他”.这里特别强调的是,它的主语和谓语的语序是陈述句的语序,不是疑问句的倒装语序.例如：10）You must remember what your teacher said．
11）—Dad,do you know when the football game will start?
—In half an hour．（宁波市）
12）汉译英：你能不能告诉我,我们去看望谁?
误：Can you tell me who（m）do we have to see?
正：Can you tell me who（m）we have to see?
总的来说就只有时态与要用陈述句这两点,记住就行了

现在完成时http://wenku.baidu.com/view/af1bf66fb84ae45c3b358c09.html
状语从句http://wenku.baidu.com/view/924a7b66f5335a8102d22060.html
宾语从句http://wenku.baidu.com/view/fdc9c00d6c85ec3a87c2c5fc.html
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