we heve been good friends since when we were chidren. 本句结构怎么理解?尤其是“since when"部分.多谢了！但是语法方面还是不太理解。

we heve been good friends since when we were chidren. 本句结构怎么理解?尤其是“since when部分.多谢了！但是语法方面还是不太理解。 we heve a good Shanghai tomorrow的同义句 Ciass,we heve a new friend we would have been very good We have been good friends since we met at school. Thank you!We have been so good friends什么意思 We have been good friends for five years对for five years 划线提问--- ---have you been good friends? Life,is like a dream to to heve a good to we stand heve today,togethat as one you brighten my days just like the sun歌 We are tired.Let's s___ walking to heve a rest.填空 英语翻译We are good friends,l've been waiting for you to come to me We have been good friends since 2 years ago.这句话对么? We have __(实际上)been good friends for about twenty years we have been good friends over twenty years.同义句转换 We _________ (be) good friends for a long timehave been 是什么意思，为什么这样填呢？ we have been good friend for many years goodfriends 和for many years 句子成分 we wrote test from english.an it haven't been so good, 完形填空I heve a good friends.(21)name is Robert.We(22 )in the same school.He likes playing soccer.He (23)like basketball.(24)he doesn't like volleyball.He (25)many balls at home.He was born on July(26).Today is his(27).His father gives him a new