Mr.Black usually waters the flowers at 9:00 o'clock.
一般疑问句:Does Mr.Black usually water the flowers at 9:00 o'clock?
肯定回答:Yes,he does.
否定句:Mr.Black doesn't usually water the flowers at 9:00 o’clock.
Mr.Black usually waters the flowers at 9:00 o'clock.
一般疑问句:Does Mr.Black usually water the flowers at 9:00 o'clock?
肯定回答:Yes,he does.
否定句:Mr.Black doesn't usually water the flowers at 9:00 o’clock.