但如果so表示强调，即强调前面所说的情况的真实性时，其结构是“so+主语+助动词/系动词/情态动词”，这里的主语同前一个句子的主语指的是同一人或物。如： She knows little English, so she does. 她英语懂得不多，的确如此。 二、部分倒装
1． 用于疑问句中。如： How did you do that?
Did you see the film yesterday?
2． 用于省略if的虚拟条件状语从句中。如果我们将连词if省略，应把were，had，should提到主语前面。如：
If you had come yesterday, you would have seen him. ---Had you come yesterday, you would have seen him.
3． 用于as引导的让步状语从句中。As引导的让步状语从句引起的倒装有以下几种形式： 1） 副词置于句首。如：
Much as I like it (=Although I like it very much), I will not buy it. 2） 动词置于句首。如：
Wait as you may (= Although you may wait), he will not see you. 3） 形容词或名词置于句首。如：
Proud as the nobles are (=Although the nobles are proud), they are afraid to see
me.
Child as he is (=Although he is a child), he can tell right from wrong. 注意：如果名词前有形容词修饰时，as引导的倒装句中要保留不定冠词。如：
A bad-tempered man as he is (=Although he is a bad-tempered man), he loves me deeply.
4． 具有否定意义的副词或连词（not, hardly, no sooner, not until, seldom, not once, at no time, never, little等）置于句首时，句子（主句）采用部分倒装。 Little do we know about him.
No sooner had he closed his eyes than he fell asleep. Seldom does he come back on Sundays. Not until he came back did I know about it.
5． only修饰句子的状语（从句）位于句首时，句子9主句）要用部分倒装。如： Only then did I realize the important of English.
Only when a child grows up does he understand his parents’ intentions. 但如果only修饰的是句子的其它成分，则无需倒装。如：
Only socialism can save China. (only修饰的是句子的主语，故仍用正常语序) 6． not only…but also…连接两个并列分句时，第一个分句应使用部分倒装。如： Not only does he do well in his lessons, but also he often helps others with their lessons.
7． so…that结构中的倒装。有时要强调so 所修饰的形容词或副词，常将so连同它所修饰的形容词或副词一起提到句首。这时，主句要用倒装结构。如： He runs so fast that he is far ahead of others. ---So fast does he run that he is far ahead of others.
He is so clever that he can work out all the difficult problems in the book.
--So clever is he that he can work out all the difficult problems in the book.(全部倒装)
六．主谓一致
在大学英语四级测试的“词汇与结构”一题中，考查主语和谓语一致关系的试题居多。所以主谓一致是各类一致关系中应该重点掌握的内容。现代英语主谓一致大致要遵循以下三条原则：
1）语法一致原则。主语是单数，谓语动词用单数形式；主语是复数，谓语动词用复数形式。 【例如】
My friend has no intention of going shopping with me. My friends have no intention of going shopping with me.
2）意义一致原则。主语和谓语的一致不是由主语的语法形式来决定，而是由主语所表
达的意义决定。 【例如】
The class are busying writing English passages.
The United States is a developed country which has advanced science and technology.
带有复数词尾的学科名称、国家等在意义是表示单数概念，用单数动词。
3）就近原则。谓语动词的单、复数取决于最靠近它的主语。由either...or，neither...nor，not only...but also连接或由here，there等引导的句子，谓语动词遵循这一原则。 【例如】Neither my friends nor I was able to persuade him to accept our advice. Either he or she has broken the window, for there is no one else there. There is a teacher and fifty students in the classroom. 相关练习
1. Each of you ______ responsible for the accident. a. am b. be c. is d. are
2. Each man and woman ______ the same rights. a. has b. have c. had d. is having
3. Every means ______ tried but without much result.
a. has been b. have been c. are d. is
4. There ______ in this room.
a. are too much furniture b. is too many furnitures c. are too much furnitures d. is too much furniture
5. The manager or his assistant ______ planning to go. a. were b. are c. was d. be
6. Not only I but also David and Iris ______ fond of playing basketball. a. am b. is c. are d. was
7. Neither Tom nor his parents ______ at home. a. is b. are c. has d. was
8. Either the dean or the principal ______ the meeting.
a. attends b. attend c. are attending d. have attended
9. ______ was wrong.