1 Are you 可能是主系表句型,后面加上表语语即可.Are you a student? 也可能是主谓宾句型,后面加上现在分词或过去分词.Are you singing? 2 do you 可能是主谓宾句型,后面接谓语、宾语.Do you speak English? 3 would you 可能是主谓宾句型,表示语气委婉 would you please stand up? would you like to help him? 4 could you 主谓宾句型 可以用来表示过去时或语气委婉 “你能否.” Could you speak in a low voice?