all by himself的用法和樣例：
例句
- He did it all by himself!
他獨自一人做了這件事。 - That boy is in a world all by himself. He never knows what is happening around him.
那男孩總是只顧自己，從不知道周?chē)l(fā)生的事情。 - He lives all by himself in that large house.
他獨自一人住在那所大房子里。 - He is calmest (=very calm) when he is all by himself.
他一人獨處時(shí)極為平靜。
