Ⅰ Translation.
1. 在初中
2. 参加
3. 做早操
4. 午餐休息
5. 享受做……
6. 下个月
7. 期待
8. 过得愉快
9. 充满能量
10. 课后活动

in junior high school
take part in
do morning exercises
break for lunch
enjoy doing...
next month
look forward to
have a good time
full of energy
after-school activities

Ⅱ Complete the sentences.
1. 成为一名初中生是件令人兴奋的事。
It is exciting to be a .
2. 我很少上学迟到,7:20就到达学校了。
I am school and school 7:20 a.m.
3. 我常常帮妈妈做家务。
I often my mum housework.
4. 在早上,我们上四节课。
the morning, we .
5. 老师有时会通过游戏教导我们。
The teacher teaches us by .

【解析】：1. "初中生"对应"junior high school student"，前面有a，用单数形式。
2. "很少迟到"是"seldom late for"；"到达学校"是"get to school"，主语是I，时态为一般现在时，用动词原形；"在7:20"用介词at。
3. "帮助某人做某事"是"help sb. with sth."，主语是I，时态为一般现在时，用动词原形。
4. "在早上"是"in the morning"，句首首字母大写；"上四节课"是"have four classes"，主语是we，时态为一般现在时，用动词原形。
5. "有时"是"sometimes"；"通过游戏"是"by playing games"，by后接动名词形式，game用复数表泛指。
【答案】：1. junior high school student
2. seldom late for; get to; at
3. help; with
4. In; have four classes
5. sometimes; playing games