1.One section of the class was reading and the other section was writing.
班上的一部分人在看书，另一部分人在写东西。
重点词语：section n.部分，区
商务用语：section foreman 领班
all sections of poeple 各界人民
show sth. in section 把某物以断面显示出来
2.They were selected from many applicants.
他们是从许多报名者当中选出来的。
重点词语：select vt.选择，挑选 adj.精选的
商务用语：a select club 选择会员严格的俱乐部
be select in choosing one‘s friends 谨慎择友
3.I‘ll send down to the kitchen for coffee.
我会吩咐厨房准备咖啡。
重点词语：send vt.送，寄，发送，派遣，打发
商务用语：send away for 函购
send in an account 开送账单，报账
send by dispatch 把（某物）作快件送发
send to the hammer 拿出去拍卖
4.He received a heavy sentence.
他受到很重的刑罚。
重点词语：separate vt.分开 adj.分开的；不同的
商务用语：separate estate 独有财产
separate maintenance 分居赡养费
separate the good ones from the bad ones 区分好坏
separate sth. into several portions 把某物分成几份