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if you lost a book,you(have to)pay for it

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if you lost a book,you(have to)pay for it
the ship would have sunk if it (not be)for the capital
they (should study)but they wasted so much precious time
if i (have)time tomorrow ,i would(aome)to help you
if you lost a book,you(have to)pay for it
1.if you lost a book,you had to pay for it
Lost 是过去式,所以用 had
2.the ship would have sunk if it was not for the
如果不是船长,船会沉的,过去的假设,所以用 was
3.they should have studied but they wasted so much precious time
他们应该学习的,但却浪费了太多的宝贵时间
后边过去式wasted ,前边用 完成时
4.if i had time tomorrow ,i would come to help you
前面一般时态假设,用过去式had,后面would后接一般现在时!
if you lost a book,you(have to)pay for it If you ___ a library book ,you must pay for it .A have lost If you _ the library book,you'll have to pay for it. you have s____ my book.you have to pay for it. if you want to book a round trip ticket,you'll have to pay m If you want to book a round-trip ticket,you’ll have to pay _ If you want to book a round-trip ticket,you'll have to pay ( If you want to book a rounaUtrip ticket,you'll have to pay _ If you brreak this window you will have to pay for it.翻译 If you broke this window,you would have to pay for it.结果是打破了 If you broke this window,you ____(have to)pay for it.求原因 if you （break） this window you would have to pay for it he w