(1)have to意为“不得不”,后跟动词原形,表示一种客观的需要。否定形式为:don't/ doesn't/ didn't have to。
All the drivers have to drive slowly and carefully because of the foggy weather.
因为大雾天气,所以司机不得不缓慢而且小心地开车。
(2)must意为“必须,得”,表示主观的义务和必要。must的否定形式mustn't表示禁止,意思是“不能,不许”。
We must follow school rules at school.
在学校,我们必须遵守学校规则。
(3)以Must开头的一般疑问句,肯定回答要用must,否定回答要用don't/ doesn't have to或needn't,意为“不必,不需要”。
—Must I go back home now? 我现在必须回家吗?
—Yes,you must. 是的,你必须回家。
(No,you needn't.=No,you don't have to. 不,你不必回家。)
—Must I hand in my book review before nine o'clock this evening?
—Oh,you _____. You can hand it in tomorrow morning.
短语 | 含义 | 例句 |
in the north of | 是指在地域范围之内的北方或北部 | Beijing is in the north of China. 北京在中国的北方。 |
on the north of | 是指与某一地域边界相接的北方 | Yangzhou is on the north of Zhenjiang. 扬州在镇江的北边。 |
to the north of | 是指在某一地域范围之外的北方 | Hebei is to the north of Jiangsu. 河北在江苏的北方。 |
Taiwan lies _____ the east of Fujian,_____ the southeast of China.