“No”指的是“not any”或“not a/an”，通常指的是名詞。”No“在下列情況下通常使用

1，回答“是”或“否”

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

2，沒有冠詞的名詞之前使用‘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，名詞前有形容詞但是沒有冠詞的情況下使用‘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， 動名詞前面使用‘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，動詞之前使用“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，修飾動詞的副詞之前使用“not”

E.g./例句 The car is not very fast.

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

3，有冠詞的名詞前面使用“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.