二、增分佳句
A．开头用语
1．Our class have had a discussion about...
2．Recently the problem of ... has been brought into focus.
3．Nowadays there is a growing concern over...
B．论证用语
1．People may have different opinions on...
2．There are different opinions among people as to...
3．Opinions are mainly divided into two groups.
4．For one thing，...For another (thing)，...
5．On (the) one hand，...On the other hand...
