"My doughter isn't feeling well" 这句里为什么不用isn't 而不用doesn't?走遍美国的一个例句

my doughter isn't feeling well和my doughter doesn't feel well有什么不同?为什么? My doughter isn't feeling well 这句里为什么不用isn't 而不用doesn't?走遍美国的一个例句 look!This is my f什么,linda No,she isn't. My mother isn't very old,but she is very old-f( ).根据首字母填单词 my future isn't dream． My Future Isn't a Dream That isn't my backpack改为复数 My english isn´t very good, Gina isn' t my sister. She's My sister isn`t good at maths i sorry.but isn't my thingks he isn't no my he isn't no my 要确切翻译 That isn't my coat._(my)is over there it's not my...和 it isn’t my. my teacher says my english isn't i——. My mother isn’t a teacher,your mother isn’t a teacher,e---------- This isn't my brother 变复数形式 this isn t my grandparent改为复数形式