preposition　ｇａ用法

prepositions of time

in in the morning, in the afternoon, in the evening, in March, in summer , in 1998,
in 1998, in a year, in a few days

on on 28th March, on Monday, on his birthday, on Christmas Day

at at two o'clock, at night, at Easter , at once

for for the months, for four weeks, for two hours

prepositon of place

in in Hong Kong, in the kitchen, in the room, in the east, in the south

on on Lamma Island, on the table, on the ceiling, live on the first floor

at live at 22, Sunny Road, at home, at school, at the door, wait at the shop

preposition..

for係for resons la..(always) OR人

for example:Tomorrow is mother day,I will cook dinner for her.

明唔明?