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怎样判断句子中的主语?

来源:学生作业帮 编辑:拍题作业网作业帮 分类:英语作业 时间:2024/04/25 17:14:13
怎样判断句子中的主语?
主语是一个句子的主题,是一个句子所述说的主体.它的位置一般居句首.可担任主语有单词,短语,从句乃至整句.例如:
1.名词做主语:
A tree has fallen across the road.(一棵树倒下横在路上).
2.代词做主语:
He told a joke,but it fell flat(他说了个笑话,但是没有把人逗笑).
3.数词做主语:
Four from severn leaves three(七减四余三)
4.名词化的形容词做主语:
Old and young marched side by side.(老少并肩前行)
5.副词做主语:
Now is the time.(现在是时候啦)
6.名词化的介词做主语:
The ups and downs of life must be taken as they come.(我们必须承受人生之沉浮).
7.不定式做主语:
To find your way out is a problem.(你要找到出路很困难)
8.动名词做主语:
Smoking is harmful to your health.(吸烟有害健康)
9.名词化的过去分词做主语:
The disabled are to receive more money.(残疾人将获得更多的钱).
10.介词短语做主语:
To Beijing is not that far.(去北京没有那么远).
11.从句做主语:
Whenever you are ready is fine.(你什么时候准备好都可以).
12.句子做主语:
"How do you do" is a greeting.("你好"是句问候语).