Unit4,Then and now,B. Lets learn,Bomb time,选出你认为不是炸弹的单词读一读,grass,Bomb time,gym,dining hall,was,Americans,moon,last,year,hill,ago,twenty,Bomb time,Internet,visit,years ago,only,building,stars,moon,liked,took,1969,last month,know,Guess,taxi,bus,bike,ride a bike,go cycling 去骑自行车,I could go cycling,can 原形 could 过去式,I could go cycling,I couldnt go cycling,could - couldnt,I could play _. I couldnt play _,bad,min,ton,Can you play badminton,Yes, I can. / No, I cant,Can you ice-skate,ice-ska
