My+sister+often+play+the+piano+after+supper.为何这里的play不加s大神们帮帮忙

My+sister+often+play+the+piano+after+supper.为何这里的play不加s大神们帮帮忙 My sister( )(like)to play football My sister can play ( ) violin very well My sister often helps Jack (study) English My sister often (study)Japanese on Sundays. My sister often helps my mum (clean)the house. My sister often helps my Mum______(clean)the house. My sister often helps me in my math.修改病句 My sister often helps me with my English的同义句是什么?句式为My sister often help me 改为一般疑问句 I can sing well 改为同意句 My sister often helps me learn English对括号里的词提问He wants to join the (math) clubHis sister can play (the guitar) I often study English with my sister (对my sister提问 My sister often walks to school同义句My sister often____ _____ _____ _____.是四条线 My sister and I like play tennisplay加s吗? my sister 不喜欢 to play football 可不可以用dislike 为什么 改错(每句有一处错):My sister prefers with play after school. My sister often helps me learn English改为同义句 My sister often gets back home ____later than we d My sister often goes shopping on Sundays.改为否定句