英语结果状语从句的时态转换和省略注意点
结果状语从句是复合句中表示主句动作结果的从句，通常由 so…that, such…that 以及 enough to等结构引导。以下是关于结果状语从句的详细介绍：
1. 引导词
结果状语从句的引导词包括so…that，such…that以及enough to等。
So…that常常用来表达结果或导致一种可能性，其基本结构为“so+形容词/副词+that从句”，意思是“如此…以致于…”。例如：She spoke so quickly that I couldn’t understand her.
Such…that结构则强调结果超出了某种标准，其基本结构为“such+a/an+形容词+单数名词+that从句”或“such+(a/an)+形容词+可数名词复数/不可数名词+that从句”，意思是“如此…以致于…”。例如：He is such a kind person that everyone likes him.
当主句中的形容词或副词表示足够的意思时，可以用enough to do sth。结构表达。例如：She is old enough to go to school.
2. 时态
在英语中，结果状语从句的时态一般遵循以下规则：
* 如果主句的时态是现在时，从句的时态可以是任何适当时态。例如：He is so tired that he can’t walk any more.
* 如果主句的时态是过去时，从句的时态通常用过去时。例如：She spoke so slowly that we all understood her.

不过需要注意的是，在某些特殊情况下，也可以使用其他时态。例如：They were so tired that they decided to take a break.

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3. 省略
在英语中，结果状语从句有时可以省略。当主句中的动词是系动词be的时候，从句中的主语和be动词通常可以省略。例如：The soup is ( ) delicious that everyone wants to taste it. 括号中省略了“so”。
此外，当主句中的动词是permit、allow等的时候，从句的主语和be动词也可以省略。例如：The circumstances do not permit ( ) me to stay here longer. 括号中省略了“to remain”。
4. 转换
有时，我们可以将结果状语从句转换为其他形式的句子。例如，可以将“so+adj/adv+that从句”转换为“such+noun+that从句”的形式。例如：He spoke so quickly that I couldn’t understand him. 可以转换为：He spoke at such a speed that I couldn’t understand him.
另外，也可以将结果状语从句转换为表示结果的介词短语。例如：He is such a good teacher that all of us love him. 可以转换为：He is ( ) us all ( ). 本例中，“so”转为“such”，且在省略号的位置表示了一种结果。
5. 注意点
在使用结果状语从句时，需要注意以下几点：
* 在使用so…that和such…that时要注意它们的位置。so后面接的是形容词或副词，而such后面接的是单数名词或复数名词（前面不加a/an）。在用enough to do sth结构时，to后面接的是不定式。
* 注意从句的时态要与主句的时态保持一致。但是当主句的动词是be的时候，从句的时态可以根据实际情况灵活运用。

填空
1. Li Lei told Zhang Qiang that he had to finish the work that afternoon, or he would be criticized by his boss the following day. 
Li Lei said to Zhang Qiang, “I _____ ____ finish the work _____ _____, or I _____ be criticized by _____ boss _____.” 
2. Zhang Hua complained that though he had been doing experiments since a week before, he had not arrived at any conclusions yet.
Zhang Hua complained, “Though _____ _____ _____ _____ experiments since a week _____, _____ _____ arrived at any conclusions yet.” 
3. I wonder if the money you charge covers the entrance fees for visiting all the places listed.
“_____ the money you charge _____ entrance fees for visiting all the places listed?” I wonder.
4. He asked us whether we would go home or stay there that night. 
He said, “_____ _____ go home or stay _____ _____?” 
5. He told Mike not to turn up without ringing his office first.
“_____ turn up without ringing _____ office first,” he warned Mike. 
6. Peter asked me when I left Shanghai
“_____ _____ _____ _____ Shanghai?” Peter asked me.  
【答案】 
1. have to; today; will; my; tomorrow
2. I have been doing; ago, I haven’t 
3. Does; cover
4. Will you; here tonight
5. Don’t; my
6. When did you leave

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