主谓一致 ◇ 1
由 and 或 both
连接两个名词 ( 或代词 ) 作主语时,谓语动词用复数形式
You and Mary are not wrong
你和玛丽没有错
Both coffee and tea are my favorite
茶和咖啡都是我最喜爱的
and 所连接的两个词如指同一主体时,谓语则用单数形式
A singer and dancer was present at the party today
这位歌手和舞蹈演员出席了我们今天的歌会
主语是抽象概念短语或从句作主语时,谓语用单数形式
Collecting stamps is my favorite hobby
集邮是我最喜爱的业余爱好
To study hard is your duty now
努力学习是你现在的任务
That we have made much progress is a fact
我们取得了很大的成绩是事实
what 或 which 引导的主语从句的句子,谓语动词与表语的数一致
What I want is a new bike
我所想要的是一辆新自行车
Which are your pictures
哪些是你的图画
What I need badly are books
我急需的是书籍
由“ each (no , every) +名词+ and + each (no , every) +名词”作主语时,谓语动词用单数
Each boy and each girl was given a gift
每个男孩和女孩都给了礼物
No sound and no voice has been heard for a long time
很长时间没有听到任何声音
由“ one and a half