lem of unemployment has been brought to such popular attention that governments worldwide are committed to finding useful solutions.）

　　◆ in the past few years，there has been a boom/sharp growth/decline in……（e。g。 in the past ten years，there has been a sharp decline in the number of species。）

　　◆ nowadays，more/most important/dangerous for our society is……（e。g。 nowadays， most dangerous for our society is the tendency to take advantage of each other in political circles。）

　　    ◆now there is a growing awareness that+同位语从句...

　　    ◆it is time we explore the truth of ...

　　进一步提出观点：

　　◆…of them hold the opinion that ….（不同观点）

　　◆…of them are in favor of the idea that…（不同观点）

　　◆people who are for/against the idea think …（不同观点）

　　◆however, each coin ha

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