you must keep off the grass; you mustn't pick the flowers; y
you must keep off the grass; you mustn't pick the flowers; y
keep,you,grass,must,the,off连词组句
you mustn't pick in the classroom 的中文意思和you must pick in the
you mustn't walk ong the grass.
you must pick the flowers改为否定句
You should keep off the grass(改为祈使句).
Keep off the grass!
keep off the grass
Keep off the grass.
You mustn's pick the flowers in the park.改为同义句
You mustn't take the flowers什么意思
You can’t pick flowers in the park.(改为祈使句)