They often play football on the playground.中on可以换成：A:for B:in C:at

They often play football.问句 They often play the basketball.（改错） They often play basketball ( )wednesday afternoon they often play games改为一般疑问句 1.they often play m____ together. They often go to work on foot (改为同义句) They often ____ ____ _____. They often play football after school.对play football 提问 they often play football after school.对play football 提问 They often play sports often school的问句 把这些句子改成一般疑问句和否定句1.They often play football often school.2.Mary likes reading books in her freetime.3.He often goes to school on foot.4.We often have a bardbecue on the beach on sundays.5.They often help each other in e ____do they often play football?They often play football (on the playground).对打括号部分提问 They play hard,they play often,and they play to win.分析一下语法啊.play是及物动词还是不及物动词 we宾格 they名词性物主代词 foot 复数often同义词 twenty_one序数词we宾格 they名词性物主代词 foot 复数often同义词 twenty_one序数词 peach复数 They often play soccer after school.对踢足球提问 主动变被动They often play football after school帮帮忙 they often play football after school 一般疑问句 they often play soccer on sunday改成否定句 they often play games for me after school .