例句：
It wasn't a ghost; it was a real person.
那不是鬼魂，是实实在在的人。
Leo made it sound so easy. But it wasn't.
利奥把这事说得好像挺简单，其实不是那么回事。
It is my duty to report it to the police.
把这事报告给警方是我的`责任。
It wasn't serious—it was all done in fun.
那不是认真的，全是闹着玩的。
I didn't get it because it cost too much.
因为那东西太昂贵我没买。