1. Are you involved in any extra curriculum in school?
在学校你参加什么课外活动？
还能这样说：
What kind of activities are you involved in?
Do you have any extracurricular activities after class?
应用解析：
be involved in disaster 陷入不幸；
be involved with 涉及；
become involved in 卷入，陷入；
get involved with 给……缠住
2. We had few after-class activities.
我们几乎没有什么课外活动。
还能这样说：
We hardly take some exercise after class.
We seldom take after-class exercise.
应用解析：
a very few 极少数；
in few 简单地说，总之；
no fewer than 不少于，多达；
not a few 相当多；
few and far between 稀少，隔很久才发生的；
few or no 几乎没有
3. Our school's extracurricular activities are very wonderful.
我们学校的课外活动很丰富。
还能这样说：
There are a lot of extracurricular activities in our school.
Our school is abundant in after-class activities.
应用解析：
curricular goal 课程目标；
curricular study 课程研究；
co-curricular 课程联合
4. The time for extracurricular activities is between 17:00 and 18:00.
课外活动时间是下午5点到6点。
还能这样说：
We can do extracurricular activities between 17:00 and 18:00.
Our extracturricular activities begin from 17:00 and ends at 18:00.
谚语：
Time tries all.
路遥知马力，日久见人心。
5. He was the member of our school's speech club.
他是学校演讲俱乐部的社员。
还能这样说：
He joined the school's speech club.
He was one of the members of the school's speech club.
谚语：
Passing oneself off as a member of the orchestra.
滥竽充数。
6. I'm on the soccer team.
我加入了足球队。
还能这样说：
I'm a member of soccer team.
I joined the soccer team.
谚语：
A word once spoken cannot be taken back even by a team of four horses.
一言既出，驷马难追。
7. Let's play basketball on the playground.
咱们一块去操场上打篮球吧。
还能这样说：
What about playing basketball on the playground?
Shall we play basketball on the playground?
8. Doing extracurricular activities is beneficial to our health.
课外活动有益于身体健康。
还能这样说：
Extracurricular activities are good for our health.
We can benefit a lot from doing extracurricular activities.
应用解析：
beneficial birds 益鸟；
a beneficial association 互助组合；
be beneficial to 对……有益