请务必尽快完成这项工作。
6. Tie the tree to the top of the stick to keep it straight.
把树系在棍子的顶部让他直着。
(1) tie v.“系上”;n.“领带,领结”;tie…to…意为“把……系在……”。
She tied his horse to a tree by the road.
他把马拴在路旁的一棵树上。
She bought a tie for her husband yesterday.
她昨天给她丈夫买了条领带。
(2) to keep it straight 是动词不定式,在句中作状语,表示捆树的目的。keep it straight 为“动+ 宾 + 宾补”结构,如:
Youd better keep your room clean. 你最好使你的房间保持清洁。
Dont touch the machine. You must keep yourselves away from any danger. 别动机器,你该保证自己的安全。
7. But more “Great Green Walls” are still needed, a
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