“No”指的是“not any”或“not a/an”，通常指的是名词。”No“在下列情况下通常使用

1，回答“是”或“否”

E.g./例句 Did you finish your homework? No, I didn’t finish my homework.

2，没有冠词的名词之前使用‘no’

E.g./例句 Sarah has no idea where her phone is.

E.g./例句 This is no time for fighting!

E.g./例句 The book has no information.

3，名词前有形容词但是没有冠词的情况下使用‘no’

E.g./例句 I checked the website, but there are no red dresses.

E.g./例句 There were no late trains today.

E.g./例句 The school has no bad teachers.

4，动名词前面使用‘no’

E.g./例句 No smoking.

E.g./例句 No playing in the street!

E.g./例句 No texting during school!

Not的用法

1，动词之前使用“not”

E.g./例句 I do not like this colour.

E.g./例句 He is not cooking dinner tonight.

E.g./例句 You cannot go to Jack’s house.

2，修饰动词的副词之前使用“not”

E.g./例句 The car is not very fast.

E.g./例句 Not surprisingly, the hotel was very nice.

3，有冠词的名词前面使用“not”

E.g./例句 I liked the pink dress, but not the red one.

E.g./例句 He is not a teacher; he is a student.

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