He?had?to?drop?out?of?the?race_初級英語口語

He had to drop out of the race because his leg was injured.

因?yàn)樗哪_受傷了，他不得不退出比賽。

drop out有退出和退學(xué)的意思。

He dropped out of school when he was fifteen.

他15歲時退學(xué)了。

如果drop out連成一個單詞，寫成dropout或drop-out，就變成一個名詞，意思是退學(xué)生。

His mother doesn't want him to be friends with those dropouts.

他的媽媽不想他和那些退學(xué)生交朋友。