第2个回答 2016-03-22
主系表的句子使用系动词,是英语6种基本句型之一
主系表结构是由主语+系动词+表语组成,主要用以说明主语的特征,类属,状态,身份等.
例如:He is a clever boy. His hair is short. It is sunny today.
主谓系列的句子(包括主谓,主谓宾,主谓双宾,主谓宾+宾补),在否定句和疑问句时要使用助动词,即是说助动词帮助构成否定和疑问句。
例如:He eats bread for breakfast.
否定句:He doesn't eat bread for breakfast.
一般疑问句:Does he eat bread for breakfast? Yes,he does. No, he doesn't.
特殊疑问句:What does he eat for breakfast? He eats bread for breakfast.
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