心海若冰
1.Bob acted as if nothing had happened yet. 2.I do admire her style of honouring her principle(s). 3.I advise you not to tell him the truth considering his cardiopathy. 4.Your words sound reasonable,yet your opinion won't affect my decision.
我最牛牛
要看具体时态了。一般现在时：Nothing happens ，一般过去式：Nothing happend。过去完成时：nothing had happened。这几种都可以，具体情况具体用哈。
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