介绍:
Day57 1他1999年参军。 He joined the Army in 1999. 2他们一起唱这首歌。 They all joined in singing the song. 3瓶子里有多少水? How much water is there in the bottle? 4你有多少钱? How much do you have? 要点: ①join表示参加时,多指“参加组织、加入组织”,可接物或人(所在的团体) ②join in(=take part in)多指参加活动 ③how much最常见“问价钱”或不可数名词量的“多少”
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