1．表示事实、现状
1）We cannot ignore the fact that．．．
2）No one can deny the fact that．．．
3）There i no denying the fact that．．．
4）Thi i a phenomenon that many people are intereted in.
5）However, that not the cae.
例：We cannot ignore the fact that indutrialization bring with it the problem of pollution. To olve thee problem，we can tart by educating the public about the hazardof pollution. The government on it part hould alo deign tricter law to promote a cleaner environment.
2．表示比较
1）Compared with A, B．．．
2）I prefer to read rather than watch TV.
3）There i a triking contrat between them.
例：Compared with car, bicycle have everal advantage beide being affordable. Firtly, they do not conume natural reource of petrol. Secondly, they do not caue the pollution problem. Lat but not leat, they contribute to people health by giving them due phyical exercie.
3．表示数量
1）It ha increaed from．．．to．．．
2）The population in thi city ha now increaed to 800, 000．
3）The output of July in thi factory increaed by 15％compared with that of January.