作文开头：1、There are various views about、、、2、different people hold different opinions.3、we cannot fall to see the fact is that、、、4、from the picture， what we cannot but admit is that、、、5、opinions vary from person to person about the problem.
支持观点过渡：1、some people are in favor of it.2、some people think it is good to、、、、3、some people hold the opinion that it is good/necessary to、、、
反对者过渡：1、other people，however，hold the opposite opinion.2、on the other hand，other people are against it.3、however， other people donont think so.4、different from this opinion，some people hold the opinion that、、、
原因过渡：1、there many reasons for this.2、the reasons are as follow.3、they hava reasons to believe that it is handful to、、、4、several reasons contribute to this problem.
个人观点：1、as far as i am concerned.2、from my point of view.3、personally（speaking、、、、）4、as the saying goes，“every coin has two side”.
选择适合自己的语句，记住一两个就好。