有關主謂一致的問題當類似於knife and fork這樣的詞組作主語時,謂語動詞用單數.請問當knife and fo

題目：

有關主謂一致的問題
當類似於knife and fork這樣的詞組作主語時,謂語動詞用單數.請問當knife and fork 交換位置時,還一樣嗎?

解答：

位置交換要看換後那個名詞是單數還是複數了
一、最基本的"主謂一致"規則　　初中課本中最基本的"主謂一致"規則是："單則單,復則復",即主語爲單數時,謂語動詞也用相應的單數形式；主語爲複數時,謂語動詞也用相應的複數形式.例如：I am a teacher.We are teachers.　　但要注意：當表示時間、長度、距離、金錢、度量等詞組作主語時,常將其看作是一個整體,謂語動詞要用單數形式.例如：Two years is quite a long time.Ten dollars is enough.另外,加減乘除也常當作整體對待,謂語動詞也用單數形式.例如：Forty-one plus fifty-nine is one hundred.How much is ninety-nine minus sixty-two?　　二、集體名詞作主語時,謂語動詞的使用　　family,class,team等集體名詞作主語時,若指一個整體,謂語動詞用單數形式；但若指其成員時,謂語動詞用複數形式.例如：The family is very big.Their family are watching TV now.　　三、neither...nor...,either...or...,not...but...,not only...but also...等連詞連接兩個主語時,謂語動詞的使用　　這些連詞連接兩個名詞(或代詞)作主語時,謂語動詞要與靠近它的主語一致.例如：Neither he nor I know anything about it.Not only the students but also the teacher has visited the museum.　　there be…結構也屬於此類.例如：There is a teacher?蒺s desk,a blackboard,some desks and some chairs in the classroom.但要注意：both…and…表示"……和……都",謂語動詞一般用複數形式.例如：Both his father and mother are doctors.　　四、兩個主語用and連接時,謂語動詞的使用　　and連接兩個名詞(或代詞)作主語時,謂語動詞一般用複數形式.例如：Mary and Helen are good friends.但要注意：and連接的兩個名詞只表示一個概念時,謂語動詞要用單數形式.例如：A singer and dancer is coming.一個歌手兼舞蹈家就要來了.　　五、politics,physics,works,the United States,news,maths等詞作主語時,謂語動詞的使用　　這類形式上爲複數,意義上卻是單數的名詞作主語時,謂語動詞用單數形式.例如：The news is very exciting.Physics is a bit difficult for me.但要注意有些名詞,如：people(人；人們),police等則是形式爲單數,意義是複數,謂語動詞要用複數形式.例如：People there are very friendly.　　六、不定代詞作主語時,謂語動詞的使用　　1.something,everything,anything,nothing,everybody,anybody,nobody,everyone,anyone等複合不定代詞,以及either,neither(neither of),each (each of),each one,no one,another等代詞作主語時,謂語動詞用單數形式.例如：Neither of the answers is right.Something is wrong with my computer.　　2.both,few,a few,many,several,others作主語,或它們所修飾的名詞作主語時,謂語動詞要用複數形式.例如：A few people can live to 100,but few can live to 150.Both of them are in my class.　　七、with,as well as,like等修飾的單數名詞作主語,謂語動詞的使用　　單數名詞作主語,且後面有with,as well as,like等修飾時,謂語動詞用單數形式.例如：The teacher with his students has gone to the library.Is the woman like you your mother?The instrument as well as other spare parts is going to be airlifted soon.(該儀器以及其它一些備用件不久將空運.)　　八、動詞不定式(或動詞不定式短語),V-ing形式以及名詞性從句作主語,謂語動詞的使用　　動詞不定式(或動詞不定式短語),V-ing形式以及名詞性從句作主語,謂語動詞用單數形式.例如：To eat in a fast food restaurant is cheap and saves time.Climbing hills is good exercise.What interests the workers most is better wages and working conditions.
你所說的就是第四點了,有的固定的短語用的是IS,還有：以下用法
1 並列結構作主語時謂語用複數 2 主謂一致中的就近原則 3 謂語動詞與前面的主語一致 4 謂語需用單數 5 指代意義決定謂語的單複數 6 與後接名詞或代詞保持一致 　7 the+形容詞/國籍形容詞.表示一類人/一國人,作主語,謂語動詞用複數.　　8 the+姓氏的複數,表示一家人或兩夫婦,作主語時,謂語動詞用複數,　　9 四則運算時,謂語動詞用單數.　　10 表示,(時間,距離,重量,金額,書名）的複數名詞作主語時,通常當做整體看待,謂語動詞用單數.下面這個網址里有很祥的,把你需要的抄上就行了,有很多是大學裡的,http://baike.baidu.com/view/84523.html?