英语名词性从句的六个命题切入点

五、考查以形式主语引出的主语从句

当主语从句位于句首时，为避免句子显得“头重脚轻”，人们通常会将主语从句移到句末，而在句首使用形式主语it。这类知识点也是近几年的高考英语的一个常考考点，同学们尤其要注意的是一些特定句式中主语从句的运用，如It’s said that…, It struck me that…, It occurred to sb that…, It remains to be seen whether…, It doesn’t matter whether…(www.hxen.net)等。请看以下高考实例：

1. Everyone in the village is very friendly. It doesn’t matter ______ you have lived there for a short or a long time. (湖南卷)

A. why                   B. how                     C. whether              D. when

2. It suddenly occurred to him ______ he had left his keys in the office. (江西卷)

A. whether              B. where                  C. which                 D. that

3. It is by no means clear ______ the president can do to end the strike. (全国卷I)

A. how                   B. which                  C. that                      D. what

解析：第1题选C。根据句中的 or 可知，空格处应填whether。whether…or…在句中引导主语从句，句首的 it 为形式主语。

第2题选D。It occurred to sb that…为英语的固定句式，其意为“某人突然想到……”，句首的it为形式主语，其后的 that 引导真正的主语从句。句意为：他突然想起他把钥匙落在办公室里了。

第3题选D。句中的what引导主语从句，句首的 it 为形式主语。句意为：完全不清楚总统要做什么才能结束那场罢工。

【碰碰高考题】（答案依次为ADCCDDA）

1. It had never occurred to him ______ he might be falling in love with her.

A. that                    B. how                   C. whether                D. when

2. It struck her ______ losing the company might be the least of her worries.

A. whether              B. where                C. which                   D. that

3. It remains to be seen ______ the cancer will respond to treatment.  

A. why                   B. how                   C. whether                D. when

4. It’s just struck me ______ I still owe you for the concert tickets.

A. how                   B. which                 C. that                      D. what

5. It never even occurred to us ______ he hadn’t been invited.

A. whether              B. where                 C. which                   D. that

6. It remains to be seen ______ the operation was successful. 

A. how                   B. which                 C. that                      D. whether

7. It doesn’t matter ______ you win or lose—it’s taking part that’s important.

A. whether               B. where                C. which                   D. that

六、考查同位语从句的“引导词”

同位语从句是高考英语的一个重要考点，其命题切入点主要涉及“引导词”that的用法。从语法上看，同位语从句主要用于说明或解释所修饰名词的具体含义或内容，与所修饰的名词具有“等同”关系。英语中可受同位语从句修饰的名词不多，主要的有belief, conclusion, decision, discovery, doubt, evidence, explanation, fact, hope, idea, information, impression, message, news, opinion, order, possibility, promise, proposal, question, reply, remark, report, risk, story, suggestion, thought, truth, theory, wish, word等。请看以下高考实例：