一条简单英语I haven't seen you for so long中long是什么词性是形容词吗?怎么可以这么用!

I haven't seen you for a long time 是什么时态 不是现在完成时吗? I haven't seen you for a long time.(同义句) I haven't seen you "I haven`t seen you for a long time. 写I haven't seen you for long time .对吗? 英语完形填空 情景交际hi,jim.i haven't seen you for a long what has happened to you for i haven't seen you for a long t i haven't seen my parents for a long time,so i m___them very i haven\'t seen him for a long time I haven,t seen Miss Yang for a long time .don,t you know she dBart:How are you,Jack?I haven't seen you for a long time.Ja —i haven't seen you for a long time.how are you ____ your En I haven't seen you for a long time.You look much _____ ( hea