He found his book this morning,but now he __has lost _ his pen.丢笔对所讲的整件事产生了什么影响,为什么用现在完成时,不懂如果用现在时有什么问题

He has not found his book/He have not find his book.分析下这两句 英语好的帮帮我.Peter went home after he found his book.改变形式：Peter_____ ______home______he found his book. he found a book on his way to school .(改为否定句）he ______ ________ a book on his way to school . He f____ found his dog Finally,Tom _____ where he put his text book.He was happy.A.finds B.finds out C.found D.found outWhich one/ why? to his_______(surprise),he found the book. He is taking his book.He can take his book. He is taking his book He can take his book 英语翻译我的答案和标答不太一样1.I read the book last week,but now it is( )(哪也找不到了)nowhere to findnot found anywhere2.Hardly had John finished his introductory remark( )(他就被听众打断了)when he was interrupted by th 要说下为什么,()the book,he found out some answers to this question .A.as he reading B.at his reading C.as reading D.on reading F____,he found his lost bike. He has found his pen 翻译 As he left for his purse,he found it______(go)By thetime I knew the accident they______already______(arrest)The solider came to______(dead)because he was hurt seriouslyHe is wondering who______(take)his book by mistake The careless boy found his book this morning,but now he ____his penA loses B lost C has lost D had lost为什么 He is taking his book 翻译 He occupied his whole afternoon reading book He found that his car was in frond of his he found that his car was in frond of his