【正文】
語氣更委婉。 .掌握短語: go shopping,in/cross the street,look at .掌握句型: ?We musn39。 Now the light is can cross the street . 現(xiàn)在綠燈亮了。 cross the street when the light is red. help your mother do some housework. read in bed. learn English from your friend. swim in the sea because it39。t can mustn39。 Yes