29. sport, game

sport多指戶外的游戲或娛樂(lè)活動(dòng)，如打球，游泳，打獵，賽馬等；
game指決定勝負(fù)的游戲，通常有一套規(guī)則 eg:His favorite sport is swimming.

30. price, prize

price價(jià)格;
prize獎(jiǎng)，獎(jiǎng)品，獎(jiǎng)金 eg:win the first prize The price is high/low.

31. a number of, the number of

a number of許多，謂語(yǔ)動(dòng)詞用復(fù)數(shù);
the number of…的數(shù)目，謂語(yǔ)動(dòng)詞用單數(shù)。eg:The number of students is increasing.

32. in front of, in the front of

in front of范圍外的前面;
in the front of范圍內(nèi)的前面 eg:In the front of the room sits a boy.