throw…at…, throw…to…
throw之后所接的介词不同，意思就不一样。用at表示怀有恶意的“投”或“掷”，用to则表示无恶意：如：
She stood up and threw a stone at the enemy. 她站起来，用石头向敌人砸去。
Please throw the ball to me. 请把球扔给我。
table, desk
desk书桌、课桌、写字台、指读书、写字、办公用的桌子。如：
Leave your key at the desk when you are out of the hotel. 离开旅馆时，请把钥匙交给服务台上。
table桌子，一般用于吃饭，游戏及其它用处，从广义上来说包括desk。如：
Mother is cleaning the table. 妈妈在收拾饭桌。
take off, get off, throw off
三者都有“脱下、脱掉”的意思，一般可以互换，但用法又有区别。take off是一般用语，可指“脱掉”衣服、鞋、袜、帽、眼镜等。如：
He took off his cap and put it on the desk. 他脱下帽子，放在桌子上。
She took off her glasses and cleaned them. Then she put them on. 她摘下眼镜，擦了擦，接着戴上了。
get off一般只用于“脱掉”衣服。如：
