send back to中back的词性

send back to中back的词性 be back to do sth 中back 是什么词性? it is back to work.back的词性? I am back home 中”back"和"home"的词性 Welcome back.中 back是什么词性 back 前为什么不加to send sb.back to +adj.还是v. I will be back 中back是什么词性? send sth back send back up now Send me something back! went back home中home什么词性 it's time to send those dogs back to space!的意思