Period 4　语法专题课

学习目标

　　1.Remember the three principles.

　　2.Use collective nouns correctly by understanding their meanings in certain situations.

感受新知

　　一、语法一致原则

　　1.当主语由and连接时,如果表示同一人或同一物时,谓语动词用单数形式,此时and后面的名词前无冠词;如果表示不同的人或物时,谓语动词用复数形式,此时and后面的名词前有冠词。

　　(1)The worker and writer 　　　(be) from Wuhan.

　　(2)The worker and the writer 　　　(be) from Beijing.

　　(3)A knife and fork　　　 used to have meals.

　　(4)The singer and dancer 　　　 on the stage.

　　(5)The League secretary and monitor 　　　 asked to make a speech at the meeting yesterday.

　　A.is B.was

　　C.are D.were

　　2.动词不定式(短语),动词-ing(短语),或从句作主语时,谓语动词常用单数形式。

　　(1)Going out for a walk after supper 　　　(be) a good habit.

　　(2)Whether we'll go 　　　(depend) on the weather.

　　3.不定代词somebody,someone,something,anybody,anything,everybody,everyone,everything,nobody,no one,nothing等作主语,谓语动词用单数形式。

　　(1)Something 　　　(has,have) gone wrong with my watch.

　　(2)Anybody who 　　　(break,breaks) the rule will be punished.　

　　4.倒装句中的语法一致。

　　(1)Two pictures 　　　 on the wall,which attract many people.

　　(2)On the wall 　　　 two pictures,which attract many people.

　　(3)Their teacher 　　　 among the students,who is in her thirties.

　　(4)Among the students 　　　 their teacher,who is in her thirties.

　　5.由分数或百分数+名词作主语时,谓语动词的形式与of 后面的名词的数一致,即分数或百分数+of+不可数名词或单数名词,谓语动词用单数形式,分数或百分数+of+复数名词,谓语动词用复数形式。

　　(1)Ten percent of the pupils 　　　 absent today.

　　(2)Three-fourths of the surface of the earth 　　　 sea.

　　【尝试运用】

　　(1)Reading English newspapers and magazines 　　　helpful to our study of English.

　　(2)Whether he comes or not 　　　 of no matter.

　　(3)To say 　　　 one thing;to do 　　　another.

(4)Listening,speaking,reading and writing 　　　four skills for English study.