A 篇章学习:朗读对话，回答问题
Joe: Does your new semester begin in fall?
Ann: Yes! I go back to school on the first of September.
Joe: What time does your school start?
Ann: Our school starts at 8:30.There are many different lessons.We have Chinese, math and English in the morning.In the afternoon, we have science and PE.
B 语法聚焦1: 时间介词in
in后通常接某一时间段，如：
小贴士
时间介词后接一个时间段或时间点形成介词短语，表示在该时间段内或在该时间点，通常放于句尾。
练习1 连词成句。
1 do / want / to / you / in 2022 / visit / the UK
______________________________________________________________?
2 bloom (开花) / in spring / these / flowers
______________________________________________________________.
3 in summer / to / Michael and his brother / go / the beach
______________________________________________________________.
C 语法聚焦2:时间介词on
on后通常接某一天，也可接特定一天的某个时间段，如：
练习2选用on weekends、on his birthday或on Sunday evening填空，每个短语仅用一次。
1 I don't go to school ____________________________.
2 Do you want to go to the movies ____________________________?(www.xing528.com)
3 He wants to go to Disneyland ____________________________.
D 语法聚焦3：时间介词at
at后通常接特定的某个时间点或时间段，如：
练习3 连线完成句子。
E 语法聚焦4：in、on和at
in、on和at是最常用的三个时间介词，各有搭配原则。
一般而言，in后接时间段，使用范围和频率都最高；on后通常接具体的某一天；而at后接某特定时间点、段。
小贴士
on Christmas （Day）指在圣诞节12月25日这一天；at Christmas指在圣诞节假期内，一般不止一天。
F 语法聚焦5：in / on / at引导的介词短语
时间介词引导的短语做状语，一般放在句尾；放在句首则可用于表示列举各时间段的安排或强调事情发生的先后顺序。
练习4 选择in，on或at填空。
1 My birthday is _____ the first of November.
2 We give many gifts _____ Christmas.
3 ______ spring, there are pink flowers and green leaves everywhere.______ autumn, apple trees have yummy fruit.
单元练习
练习5 根据以下日程表信息回答问题。
练习6 选用in、on或at填空完成短文。
My mom's name is Judy.She and my dad are teachers in my school.(1)______ the morning,they get up (2)______ 6 am, and I get up(3)______ 7 am.We go to school together.But this is only (4)______ weekdays.We all get up a bit later (5)______ weekends.
My parents and I have our summer vacation(6)______ July and August.We also have a 4-week vacation (7)______ winter.We visit my grandpa and grandma (8)______ Christmas.
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