改错（把正确的句子写出来,并说说为什么）What about to play volleyball on the playgroud?How many water do you drink every day?His parent are both workers.He is learning to play violin.Your box is heavier than them.
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改错（把正确的句子写出来,并说说为什么）What about to play volleyball on the playgroud?How many water do you drink every day?His parent are both workers.He is learning to play violin.Your box is heavier than them.
改错（把正确的句子写出来,并说说为什么）
What about to play volleyball on the playgroud?How many water do you drink every day?His parent are both workers.He is learning to play violin.Your box is heavier than them.
改错（把正确的句子写出来,并说说为什么）What about to play volleyball on the playgroud?How many water do you drink every day?His parent are both workers.He is learning to play violin.Your box is heavier than them.
1.to play 要改为 playing
What abou doing sth 做某事怎么样?
2.many 要改为 much
water 是不可数名词,不能跟how many 连用.
3.parent 要改为 parents
父母双方用 parents ,parent 指父亲或者母亲
他父母都是工人.
4.violin 前 加 the
西洋乐器前必须加定冠词the
play the violin 拉小提琴
5.them 要改为 theirs
用名词性物主代词.
theirs =their box
你的箱子比他们的（箱子）重.
What about playing volleyball on the playgroud? What about doing sth.
How much water do you drink every day?water是不可数名词
His parents are both workers. are 说明主语是复数
He is learning to play the violin.乐器前要用the
Your box is heavier than theirs.theirs=their box