英语四级作文常用句型：号召性

　　号召性—— 呼吁读者行动起来, 采取行动或提请注意.

　　想及观点

　　[1]. It is time that we urged an immediate end to the undesirable tendency of····是时候我们要求立即结束对····不良倾向

　　[2]. It is essential thar effective measures should be taken to correct the tendency.