made是过去分词.we must not buy 这个句子分开看.
句型：We must save the trees and not buy things made of ivory.
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we must save the trees and not buy things made of ivory
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we must save the trees and not buy things made of ivory意思
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we must save the trees and not buy things made of ivory.中的“
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save ,the,we,trees ,must,ivory,made of,things
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The books are made _____ trees, and we can use trees in many
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We should save water and tree to protect the Earth 对we shoul
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Water is the _____ of all the things we eat and drink. Not m
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英语翻译3.We must not buy the expensive car.4.He must not drive
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we must plant more plants and trees .the birds and animals c
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we must plant more plants and trees .the birds and animals c