Revision 翻译。 1.钓鱼真有趣。 It is interesting to go fishing.2.对我来说帮助他是必须的。 It is necessary for me to help him.3.他真聪明，解决了这个难题。 It is clever of him to solve the problem.4.他们这样做真是愚蠢。 It is foolish of them to do so.