He doesn't know if she lives in Ottwa.是什么从句?

Tom will go to his friend's birthday party .He doesn't know---he should bring a present A what B if he's doesn'n know if he should bring a present 翻译 bring,know,doesn't,a,I,he,him,will,if,present (连词成句) bring ,know ,doesn't ,a ,I ,he,him,will,if,present,连词成句 He doesn't know if she lives in Ottwa.是什么从句? 把一个英语句子改为虚拟语气He doesn't know if he should go to see her.He ______ know if he ____ go to see her. I don't know Tom's address.He doesn't know Tom's address,either.(用neither...nor连接) He doesn't know the answer,so he doesn't put up his hand(改为虚拟语气)If he ______ the answer,he______ _______ _______ his hand. 英语翻译he doesn't know _____________ He doesn't know BeiJing verywell He doesn't love me,I know. jack's grandfather doesn't know how he should use a computerJack's grandfather doesn't know how __ __ a computer He wants to know if if___tomorrow.A.rains B.doesn't rains C.will rain D.isn't rain she doesn't know if he is _____or dead becausehe hasn't heard from him for a long time.(live) He doesn't know the ___in a red blouse.Perhaps she is lily's mother. He doesn't know when ____(leave) here; He doesn't know when he___(leave) here 同义句He doesn't know me.He doesn't know _______ ______ ______. He still doesn't know和Still he doesn't know的区别