1、她们所有人对他都很礼貌.翻译成英文.2、他们许多人擅长电脑,是电脑俱乐部的成员翻译成英文

楼上的翻译不太精确,因为是许多人,应该用many较好一些,而most指大多数人.
我的翻译：
1. All of them are very polite to him. 或者：
They are all very polite to him
2. Many of them are good at computers,and they are the members of a computer club.
祝楼主学习进步,更上一层楼!(⊙o⊙)