为什么要用send cards to my friends,而不是for my friends?

为什么要用send cards to my friends,而不是for my friends? But I did not send cards to my friends? Send Christmas cards to my friends.改句型,意思不变 I didn't send cards to my friends 中的to my friends在句子中是什么成分? I did not send my friends cards.英语改写句子 i did not send cards to my friends 可以把card的s去掉吗 My friends ___(play) cards now. People send cards to ___ large numbers of friends为什么横线上填的是gr I send email to my friends.其中,email为什么不加s? 为什么I send email to my friends and play computer games.中的emai Thanks to my friends I ask my friends ______ to my home for dinner.