he didn not know what was happening outside为什么这里不用happened 我觉得应该是被动关系

He didn't know if he had passed the exam.这句话从语法上来讲对吗?didn't know 能与 if 句末需要加or He didn't know if he had passed the exam or not. i didn't know he __( not take)part in the match Not having been told ,he didn't know where to star.的翻译 _____her before,he didn`t know she was his aunt.A Not see B Not havingseen C Not saw D Having not see ______,Johnson didn't know how to begin.A.Not having made a speech beforeB.For he knew nothing about a speechC.He didn't know any speechD.Having not made any speech before he didn not know what was happening outside为什么这里不用happened 我觉得应该是被动关系 Not being familiar with Shanghai,he didn't know where to go.这是非谓语,但是为什么用being familia Although the work was not difficult,yet he didn't know how to do后要加It吗 语法：Not until Mr Smith came to China ___ what kind of a country she is.A.he didn't know B.he knew C.did he know D.he could know 英语翻译Dear There`re always some things that let me in tears.I know that you didn't tell me anything,so it's just my guess and also I am not sure whether it's right or not.please believe me,i really like you Sometimes I can't express exactly wha The man wasn't able to understand English.So he didn't know what I wanted.变成动词ing形式!我写的是：Not understanding English,he didn't know what I wanted. He didn't know how he could get here He said he didn't know it yet 怎么翻译 Because he didn't know how to do it,he went to her for help._____ _____how to do it,…….可否直接用Didn't know how to do it,…… .还是Not knowing how to…….Because he didn't know how to do it，he went to her for help.句型转化为 __ Not until Mr.Smith came to China_what kind of country she is.he knewhe didn't knowdid he knowhe couldn't know选出正确答案并给出理由 He didn't know _____ he should go or not.A.if B.weather C.that D.whether选什么?快 ____,he asked the teacher .为什么选BA.Not knew how to do B. Not knowing what to do C.Didn't know what to do D. Because not know how to do it. He didn't know what to do next.He didn't know what he ____ ____ next.