there be sb doing sth这个是固定词组吗,还是现在分词作后置定语

there be +sb+doing there be sb doing there be sb/sth doing there be sb.do sth 还是there be sb.doing sth.有何区别 用there be sb doing sth 造句现在就要 用3.see sb.doing4.there be doing造句中文 stop sb from doing st.h. spent sb. st. doing sth./on sth.翻译：①spent sb. st. doing sth.②spent sb. st. on sth. 英语造句规则 就是：+ + 这种格式例如：there be句型：There be + sb./sth.+ somewhere/doing. 请帮我造两个句子,1.there be sb doing 2.there be sb/sth done 什么是动词结构?what about doing sth.talk to sb.about sth.be doing sth.there be结构? 用there be sb/sth doing sth 造句.最好长一点,谢谢 there be sb doing sth这个是固定词组吗,还是现在分词作后置定语 There is sb. doing sth.是什么意思 sb spend some time in doing sthsb.spend st./sm.(in) doing sth.造句 翻译sb be up to doing 有没有sb be considered doing 用法? sb be always do 或doing