She's such goody-two-shoes. 她是个十足的假道学.
You've put on a good show. 你表演了很精彩的一出戏. You're living a lie. 你过着伪君子的生活.
You don't practice what you preach. 你并没奉行你教导别人的道理. He's great on theory, but he's lousy in real life. 他善于讲道理, 但实际生活表现很差. 他是口头上的强者, 行动上的矮子 You're just a bunch of talk. 你光会说.
You're just and old windbag. 你不过是个牛皮大王. Some of us are all talk and no action. 我们当中有些人光动口不动手.