If you could xin vui lòng di ễ n ñ? t l ị ch s

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If you could : Xin vui lòng. Di n ñạ t l ch s 1 yêu c u mà ng ườ i nói cho r ng ng ườ i kia s ñồ ng ý nh ư là m t l ñươ ng nhiên. If you could open your book, please. If + Subject + should + ..... + command : Ví ph ng nh ư . Di n ñạ t m t tình hu ng dù có th x y ra ñượ c song r t khó. If you should find any difficulty in using that TV, please call me. Có th ñả o should lên trên ch ng và b if Should you find any difficulty in using that TV, please call me. 13.4 Cách s d ng if trong m t s tr ườ ng h p khác If... then : N ế u... thì If she can’t come to us, then we will have to go and see her. If dùng trong d ng câu suy di n logic (không ph i câu ñ i u ki n): ðộ ng t các m nh ñề di n bi ế n bình th ườ ng theo th i gian c a chính nó. If you want to learn a musical instrument, you have to practice.
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S ư u t m và thi ế t k ế b i Ph m Vi t V ũ - 49 – Tr ườ ng ðạ i H c Kinh T ế ð à N ng If you did not do much maths at school, you will find economics difficult to understand. If that was Marry, why didn’t she stop and say hello. If... should = If... happen to... = If... should happen to... di n ñạ t s không ch c ch n (Xem thêm ph n s d ng should trên) If you should happen to pass a supermarket, perhaps you could get some eggs. (Ng nh mà anh có tình c ghé qua ch có l mua cho em ít tr ng) If.. was/were to... Di n ñạ t ñ i u ki n không có th t ho c t ưở ng t ượ ng. Nó g n gi ng câu ñ i u ki n không có th t hi n t i. If our boss was/were to come in now (= if the boss came in now), we would be in real trouble. What would we do if I was/were to lose my job. Ho c có th di n ñạ t m t ý l ch s khi ñư a ra ñề ngh If you were to move your chair a bit, we could all sit down. (N ế u anh vui lòng d ch gh ế c a anh ra m t chút thì chúng ta có th cùng ng i ñượ c) Note: C u trúc này tuy t ñố i không ñượ c dùng v i các ñộ ng t t ĩ nh t i ho c ch tr ng thái t ư duy Correct: If I knew her name, I would tell you. Incorrect: If I was/were to know... If it + to be + not + for : N ế u không vì, n ế u không nh vào. Th i hi n t i: If it wasn’t/weren’t for the children, that couple wouldn’t have any thing to talk about. (N ế u không vì nh ng ñứ a con thì v ch ng nhà y ch có chuy n gì mà nói) Th i quá kh : If it hadn’t been for your help, I don’t know what to do.
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