i heard his sister singing first ,and then laughing在这里singing是什么词性?我认为是动名词,应为first在这里做副词放在其之后,而现在分词相当于一个形容词或副词,副词修饰副词和形容词,被修饰词应该

i heard from my sister yesterday 同意句钻换要两句 I heard a letter from my sister yesterday 改错 g.I always hear him play the piano at night.(变被动语态)He heard his sister crying just now.(变被动语态) He likes math because it’s i.But his sister does’t think so . 英语翻译——————aids had left a scar on Ajani and his sister ,their grandfather's face turned white.a when he heard b having heard c when hearing d on hearing Janet has hardly heard from his elder sister ..,she's received many lettersfrom her elder sister.A has she,No B.hans't she,Yes C has she ,Yes D.hasn't she,NO His Wife's Deceased Sister怎么翻译 Jim ( ) his sister are ( ) their mother's ( ) I heard from my sister yesterday.(保持句意不变)I___ ___ ___ ___my sister yesterday. 选择His sister left home in 1998,and ____since.A has not been heard of B has not heard of .When I passed by his door,I heard him _____________. They are his sister's books.(对his sister's 提问） Bob __ a letter from his sister.A,hear B,heard C,got D,receivesWhy? his sister last night i heard him driving his pigs to market. That's his sister's book.否定句、一般疑问句、划线部分提问（his sister's划线） That's jim i'm h sister. --where was alice's sister?--i don't know where______Awas alice's sister Balice's sister was Cis alice's sister Dalice's sister is