Prepositions

1. In front of: 的意思是在前面
   例句：She sits in front of me.                      

2. Opposite: 的意思是在对面
    例句：My house is on the opposite of the road.

3. On: 可以用在有节日，日期的句子中
    例句：We went to visit our grandparents on Christmas Eve last year.

4. In: 可以用在年份，月份，一天里的三段时间 ( morning, afternoon, evening )
    例句：I finished my homework in the afternoon.

5. At: 可以用在一天里的另一三段时间 ( night, dawn, dusk )
   例句：I sleep at 10 o'clock at night.

6. By: 一般是用在需表达最迟的时间的句子中 
   例句：Please finish your project by next week.