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高三英语教案Unit 2 Crossing Limits（下）,
The book sells well. This knife cuts easily. Paper tears easily.
2）I was to blame for the accident.
3) 在need, require, want, be worth 后的动名词必须用主动形式。
The door needs repairing.= The door needs to be repaired.
This room needs cleaning. This book is worth reading.
四，主谓一致
1. 由or 连接两个名词或代词作主语时，谓语动词应与靠近它的主语一致。还有either … or … , neither … nor …, not only … but also … 即是就近原则。
e. g. Are you or he to drive ? Was she or you there ?
2. 由两个名词由with (together with，along with，as well as , rather than ，no less than ，but， besides，except )连接时，谓语动词应与前面的主语一致。
e. g. Nobody but John and Helen was absent. I rather than you, am responsible for the accident.
3. 英语中，一些表示总称意义的名词，如：police，people，cattle, 等作主语时，谓语动词要用复数形式。
e. g. Some people spend a lot of money on clothes. Cattle are raised everywhere by the farmers.
4. 集体名词作主语时: 指一个整体，谓语用单数;表一个一个的人或整体中的部分成员时，谓语用复数。(class ,club, committee, company, crew, crowd, enemy, army, government, group, party, public,
team, family, 等。)
不定代词或分数，百分数+集体名词作主语时，常表集体中的部分成员，谓语用复数。
5. 当主语表示时间，重量，距离，价格时，谓语动词用单数。
Five hundred dollars is quite enough for the return voyage (返航).
Seven kilometers was covered in two hours .
6．当主语是一个从句，不定式或动名词时，谓语一般用单数。
Ｗhether he succeeds or fails doesn’t concern me . (他成功或失败与我无关)
Swimming in the Yangtze River needs great courage.
7．定语从句的关系代词在从句中充当主语时，从句的谓语应与先行词保持一致。
She is the only one of the students who has passed the examination.
They told us something about the houses which were built in the 1540’s / 1540s.
8．在强调句中，强调主语时，后面的动词还是由被强调的主语来确定。
I am in the search for my missing gold ring .
其强调句为：It is I who am in the search for my missing gold ring .
I am in the search for my missing gold ring .
其强调句为：It is I who am in the search for
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