I count myself lucky to have known him.

　　和他相識，我覺得很幸運(yùn)。

　　I'm lucky in that I've got four sisters.

　　我很幸運(yùn)，因?yàn)槲矣兴膫�(gè)姐妹。

　　Luckily there was a taxi rank nearby.

　　幸好附近有個(gè)出租車候客處。

　　Luckily, my mother rose to the occasion.

　　幸好，我母親挺身而出作了處置。

　　He's been very unlucky that no chances have fallen to him.

　　他很不走運(yùn)，沒有任何機(jī)會落到他身上。