急，关于英文的翻译和造句!!高手请进。(高分悬赏)

造一个句子的词组： 1.cheers up 振奋 Don't worry, we will cheer you up! 2.wash away 冲走 The rain wash away my bad mood. 3.mistake sb for sb 把……误认为…… I am so sorry for mistaking you for your twin sister. 造2个句子的词组： 1.be familiar to 被某人熟悉 Liu Xiang