They are on vacation in Chengde 这句话是现在进行时,他们正在承德度假.为什么on vacation不变形.

they are on a vacation ,这句话对吗 they are busy _______(prepar) go on vacation. They are on vacation in Chengdu对划线部分提问 they are ____ vacation now They are going to Hainan( )their vacation.A.on B.in C.for D.to They are on vacation in Chengde 这句话是现在进行时,他们正在承德度假.为什么on vacation不变形. -Where are his family?-They are all _ vacation now.A.at B.of C.on D.for what are they doing for vacation中文 They are going to the beach for vacation（同义句转换） They are going to —— ———on the vacation是三个空vacation改为beach They stayed (at home) on vacation.(就括号部分提问) ____ ____ they ____ on vacation? they stayed at home on vacation.(就划线部提问）（ ） （ ）they( )on vacation? WHERE ARE YOU GOING ON VACATION 翻译alrite,are u on vacation now? where are your friends going on vacation 你知道他们准备去哪儿度假吗?Do you know ___ they are ___ on vacation? 连词成句：1.talk,going ,I am ,to ,her ,with ,the.on phone2.are.going.they ,vacation,Saturday,on,morning,on they are going to Australia for vacation.（对for vacation)提问_____are they going to Australia_____? They stayed at home on vacation.（对画线部They stayed at home on vacation.（对画线部分提问) （...）（...）they（…）on vacation