I saw Li Lei yesterday We hadn't seen each other since we left school.为什么不是现在完成时的havent

I ----(see) Li Lei -----(go) out just now.答案是saw,go,为什么不是 saw.went. I saw Li Lei (go) out just now.这里的空格填什么?为什么?I saw Li Lei (go) out just now.这里的空格填什么?为什么? I saw Li Lei yesterday.We hadn't seen each other __I left Beijing. I saw Li Lei yesterday We hadn't seen each other since we left school.为什么不是现在完成时的havent I am li lei改为同义词 Li Lei is i ___in Chinese 30.----Who is the man over there.It can’t be Li Lei,_______.----- _________.It must be John.30.----Who is the man over there.It can’t be Li Lei,_______.----- _________.It must be John.I saw Li Lei in the classroom just now.A.is it; Yes,it is B.ca I saw Janson yesterday.We haven't seen each other since we left Beijing.这句话用现在完成时对吗?为什么这句话却用过去完成时I saw Li Lei yesterday.We hadn't seen each other since I left Beijing. ---Has Li Lei finished his work today?--- I have no idea,but he ______ it when I saw him ……---Has Li Lei finished his work today?--- I have no idea,but he ______ it when I saw him this morning.(conduct) I know the man (用Li Lei替换I) I am Li Lei .(变一般疑问句） I am li lei's teacher!改为一般疑问句 I am Li Lei (改为否定句)是什么 Li lei is a friend of ________.(I) IS your name LI Lei Yes,I am.改病句 Is your name Li Lei?Yes,I am.改错. Li Lei and I are n___ in the same class. Li lei and I (not be) good friends.