I am studying the differences between boys and girls.为什么difference要加s?

i am studying in college I _____(disturb)by the TV noise while I am studying every night. now I failed test studying so I harder last the am 连词成句 连词成句 now i failed test studying so i harder last the am I am studying math in the classroom.（对画线部分in the classroom提问） i am studying english now.改为一般现在时 I am studying the differences between boys and girls.为什么difference要加s? 英语翻译I Am YouBy Kim TaylorLa di da di da daLa di da di da daLa di da di da daLa da daI am tied by truth like an anchorAnchored to a bottomless seaI am floating freely in the heavensHeld in by your heart’s gravityAll because of loveAll becaus I am studying English.I( )( )( )我在学英语,收获很多 请区分解释下列句子I study for the math test.I am studying for the math test.I studied for the math test. I am a girl who is studying in the classroom 这句话没语法错误吧?I am a girl who后面接的应该是第三人称吧? 把I am studying a subject.I am very interested in the subject改成一个句子用who 或that改 I am studying English,too.（变为否定句） I am studying hard.I am haveing fun.(改为选择性一般疑问句） （ ）（ ）studying hard( )having fun? I am studying English ,too.(改为否定句) I am _____studying English ,______. 一道英语选择踢 说下理由I called at ten yesterday ,but nobody answerd the phone.I at school then.A was studying B study C am studying D studied 1、I‘m studying.The twins are also studying.合为一句_____ _____ the twins _____ _____ I am studying.2、I'd like to help homeless people.同义句I'd like to help _____ _____ have no home.3、We'll start a club in the school.同义句We'll ___ i didn't see you at the party.oh i ()for english test A was studying B am syudying C studied