请把窗帘挂起来 可译为 Please hang the curtains up.
请扔掉它 可译为Please throw it away.
curtain 作名词时指"窗帘，门帘；帐幕之物，幕布；启幕，落幕" 复数形式为curtains
例句：
Her bedroom curtains were drawn.
她卧室的窗帘拉上了。
The curtains waved in the breeze.
窗帘在微风中飘动。
A mouse scuttled behind the curtains.
一只老鼠从窗帘后面跑走了。
hang up 指"挂上; 挂住；使等候；将电话筒挂上"
例句：
I should hang up my clothes in the closet.
我应该把我的衣服挂在衣橱里。
We hang up lanterns.
我们挂上灯笼。
throw away 指"扔掉；摒弃；浪费，错过"
例句：
I've got boxes of old clothes in the attic, which I really should throw away.
我在阁楼上有好几箱旧衣服，真该都扔了。
It's wasteful to throw away glass, paper and metal.
扔掉玻璃、纸片和金属是很浪费的行为。
throw it away 指"把它扔掉，抛到脑后；放弃"
例句：
Why don't you throw it away?
你为什么不把它扔掉？
The fish smells; throw it away.
这条鱼都臭了，扔掉算了。
He picked it up and throw it away.
他把它捡了起来扔掉了。
望采纳
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