單字解析
1. My goal is to be rich. 我的目標就是要有錢。
名詞如goal (目標)、plan (計劃)、purpose (目的)、dream (夢想、理想)、intention (意圖)、wish (願望) 等, 均表示一種未完成或想要完成的願望、企圖。故此類名詞作主詞, 之後有be動詞時,不可接動名詞作補語, 而應接to引導的不定詞片語, 以表示此類未完成的願望或企圖。
例:My dream is being a doctor. ()
→ My dream is to be a doctor. ()
(我的理想就是要當醫生。)
My purpose is simply saying goodbye to you.()
→ My purpose is simply to say goodbye to you. ()
(我的目的就是要向你辭行。)
2. I think being happy is more important than having all the money in the world. 我認為快樂要比擁有世上所有的錢來得重要。 
= I think that being happy is more important...
本句乃由that引導的名詞子句作及物動詞think的受詞, 原句省略了that。在該子句中, 作者以being happy作主詞, 與than之後的主詞having all the money in the world相互呼應, 均為動名詞片語。但不定詞片語亦可作主詞, 故本句亦可改為如下:
I think (that) to be happy is more important than to have all the money in the world.

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