I didn’t meet him.He _had left_ when I got there.(leave)这句是什么时态?说明时态的公式正在进行时是be+doing。为什么要填had left？

I ____(see)him,but he didn't see me Mr Brown___(live) in bejing since he came to chinai didn't meet him.he___ when i got there (leave)请帮看看这两道题的区别是什么谢谢! I didn't meet him.He ___ when I got there.(leave)在线等i didn't meet him.He ___ when I got there.(leave)我答案上是显示has left,但是我觉的应该是过去完成时had left,应该I got there是说我到那时应该是过去啊,为什么 i went to see tom at the hotel. i did n't meet him because i didn't know_which room he stayed in和where he stayed in选哪个 为什么 I didn't tell him what he should do同义句：I didn't tell him ---- ---- do Why didn't he talk with me since I said to him I like him? I didn't meet his son.____ wasn't with _____ yesterday.(he) 应填什么? i( ) from him since he leftA didn't receiveB haven't gotC haven't heard为什么? I didn’t meet him.He______ when I got there.( leave )用had left好 还是has left好? I said I didn't like him,I just want to guard his.He which match? 怎么用过去完成时态改写下列句子?↓1.He didn't meet him.2.Tom didn't see the new film.3.I don't wash my clothes.4.She doesn't write to me.5.They don't speak to him. I didn’t meet him.He _had left_ when I got there.(leave)这句是什么时态?说明时态的公式正在进行时是be+doing。为什么要填had left？ i kept telling him that he should study hard but it didn't find itit didn't help 啥意思 what's the differents between these sentence?No matter what he said ,I didn't believe him.whatever he said,I didn't believe him.I didn't believe what he said. 帮忙分析一下这个定语从句中先行词在句子中的成分.he didn't become a person who his father wanted him to doI happened to meet the professor who I got to know at a party I didn't tell him what he should do next.(改为简单句) I didn't tell him ____ ____ ____next. I didn't hear from him you didn't see him and____did i