Yìdiǎn(r) 一点(儿)/一點(兒) and yíxià(r) 一下(儿)/一下(兒) both express ‘a bit’ but they have distinct usages.
Yìdiǎn(r) 一点(儿)/一點(兒) is a modifier used with both nouns and adjectives, while yíxià(r) 一下(儿)/一下(兒) is a verbal measure word used with verbs describing actions.
Structure
Basic form
For basic structures check yìdiǎn(r) 一点(儿)/一點(兒) and yíxià(r) 一下(儿)/一下(兒).
Functions
1. Quantity vs. duration of action
Yìdiǎn(r) 一点(儿)/一點(兒) modifies nouns and indicates a small and indefinite quantity of something, while yíxià(r) 一下(儿)/一下(兒) modifies verbs and indicates a brief or quick action.
Yìdiǎn(r) 一点(儿)/一點(兒) is used before nouns to express ‘a little bit of something:
Yíxià(r) 一下(儿)/一下(兒) is used after verbs to express that an action is brief:
2. Comparing vs. trying
Yìdiǎn(r) 一点(儿)/一點(兒) modifies adjectives and indicates a slight, vague difference, while yíxià(r) 一下(儿)/一下(兒) modifies verbs to suggest trying or attempting an action briefly.
Yìdiǎn(r) 一点(儿)/一點(兒) is used after adjectives to express that something is ‘a little bit more’ compared to something else. It might be a comparison between two things or an inherent comparison:
Yíxià(r) 一下(儿)/一下(兒) is used after verbs to suggest ‘giving something a try’: