she is my good friend 为什么不要加冠词 “a” fridend 不是可数名词么?不懂

she is my good friend.同义句 My friend is quiet.She is a good ____(listen). Linda is my classmate.She is also my good friend.合并成一句Linda is my classmate,my good friend She is my good friend Alice.哪错了? 连词成句.friend,she,my,good,is,Alice(.) my mother has a good m though she is 70 Ann is my good friend.She ofen helps me （ )math she is my good friend（对划线部分提问） 划线部分：my good friend being busy is better than being I_____,I like to work together with my frien She is my good friend and she always r___to tell others my secrets her pen is good ,but ___(my)is good then ___(she) ）1.My family ____ a big family.My family ____all here.A.is,is B.are,are C.is,are D.are,is（ ）2.This is __________.A.a picture of family B.a picture of my familyC.a family’s picture D.a family of my picture（ ）3.Let’s __________ good frien This is my good friend_________name is linda A:she B:she s C:Her 填空.Millie is my good friend.She is an America.She was b____in America. Mrs.Smith is my teacher.She is also my good friend合并为一句. she is good ( ) swimming. My sister is good at ___(sing),but she isn't good at ___(dance) she is a good girl.she always helps ____ my English.improve improving improved / 选哪个