1、Itisimportant或essential或crucial或significantforsomeonetodo...对某人来说，做某事是重要要的

2、Thereislittledoubtthat....毫无疑问

3、beputunderthreatof遭受某物的威胁

4、Thosewho...那些...的人

5、Thereasonwhy...isthat...原因是...

6、Wemustkeepinmindthat...我们必须牢记

7、enablesomeonetodo...使某人能够做某事

8、Itisnoexaggerationstosaythat...毫不夸张的说