Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the present.

语音讲解
单词发音
history n. 历史，历史学
mystery n. 秘密，谜；神秘
gift n. 礼物；天赋；赠品
连词发音
yesterday is
today is
why it is called the
tomorrow is
轻读重读
重读：yesterday/history/tomorrow/mystery/today/gift/present
弱读：is/a/but/it/the

词汇讲解
1.be called something phrase.
释义：被称为 被叫做
例句：The special park in Beijing is called the World Park.
这个在北京的特殊的公园被叫做世界公园。
同义词：be named something 被命名为
called/named也可以单独用，意思是“被称作”
He is called Jack. 他被叫做杰克。→他叫杰克。
2.present adj./noun.
形容词
① in a particular place 在场
例句：Foreign observers were present at the elections.
外国观察员出席了选举。
② to be felt strongly or remembered for a long time 存在
例句：The memory of her brother's death is still present in her mind.
她哥哥的去世至今仍在她脑海中。
③ happening or existing now 目前的
例句：At the present time we have no explanation for this.
目前我们对此无法解释。
at present 目前 当下
请看at present在电影《爱情三选一》中的应用：
-Dating? 在和谁约会吗？
-Not at present. You? 目前没有，你呢？
名词：礼物=gift
3.pun a humorous play on words 双关语
幽默的pun举例：
He drove his expensive car into a tree and found out how the Mercedes bends.
他违章超速驾驶，结果将昂贵的名车撞到树上，他终于看到他的奔驰车（Mercedes）是怎样撞弯（bends）的。这句话的幽默之处是讲Mercedes Benz（奔驰车）中的Benz故意改写成bends。

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