How come you look so tired?里的come是怎么回事?对吗这句话?

how come you look so tired.come 是怎么回事和do 一样吗 How come you look so tired?里的come是怎么回事?对吗这句话? How come you look so tired?请对come 分析1 可否省略2 什么意义thanks you look so tired,come on ahd sit down,please. how are you,liu yun look so happy翻译是什么? Look ,you wife has just come in. ______A So she did B So she has How come you are so interested in the environment,Jack?其中的come是怎么回事 You look so charming you look so today You look so deep you look so 英语翻译You are my love,you are my lifeSince you were an angel from the sky You fill my fantasy The way you look takes me so high You're everything to me And all i want is your photograph How I'm longing for your smile So come and touch me Come a 英语翻译Since you're an angel from the sky You fill my fantasy The way you look takes me so high You're everything to me And on my wall is your photograph How i'm longing for your smile So come and touch me come and feel me Hear me cry You're my So how come it took you so long to ask me out?come在这里什么成分?句子结构不明白. 英语大手来解答困惑How come you say so 难道不加助动词吗how come是个词组吗 You look so tired,come on and sit down ,please.的意思 How come you're so interested in the environment ,Jack?How come 是什么意思 哪种用法how come 用法和出处或者依据 so how about you?