need的用法
1.need作实义动词,意为“需要”。如:
Do you need to stay at home?
你要呆在家里吗?
2.need作情态动词,一般用于对must的否定回答。如:
---Must he leave now? 他必须离开吗?
---No, he needn't. 不,他不必。
3.区分:
a.need作实义动词。
He needs to go.
He doesn't need to go.
Does he need to go?
Yes, he does./No, he doesn't.
b.need作情态动词,一般不用于肯定句。
He needn't go.
Need he go?
Yes, he need./No, he needn't.
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第二篇:八年级上册英语语法《频度副词》知识点整理
频度副词的位置
1.常见的频度副词有以下这些:
always(总是,一直)
usually(通常)
often(常常,经常)
sometimes(有时候)
never(从不)
2.频度副词的位置:
a.放在连系动词、助动词或情态动词后面。如:
David is often arrives late for school.大卫上学经常迟到。
b.放在行为动词前。如:
We usually go to school at 7:10 every day.我们每天经常在7:10去上学。
c.有些频度副词可放在句首或句尾,用来表示强调。如:
Sometimes I walk home, sometime I ride a bike.
有时我步行回家,有时我骑自行车。
3.never放在句首时,主语、谓语动词要倒装。如:
Never have I been there.我从没到过那儿。
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