If Sept.11 had never happened the airport workers would not have been arrested and could have gone probably indefinitely

If Sept.11 had never happened the airport workers would not have been arrested and could have gone probably indefinitely especially if it had never been attained before.什么结构 If you never try,you will never know!but if you had been tried,you must know whaf you wemt! He ( )as if he ( ) me before. A acts, has never seen B acted, had never seen C acts, had never seen解释下，谢谢！ Dr Bethune worked hard as if he ______.Dr Bethune worked hard as if he ______.a.never had felt tired b.had never felt tired c.never felt tired d .was tired never If you want something you've never had,then you've got to do something you've never If you had any reason you’d know I never want to see you again. If you love me because Iam a substitute.I...I wish you had never loved me. He___as if he had never lived in England beforeA.made B.did C.conducted D.behaved if you had never been,what kind of hell would that be?求翻译 i would never believe it if i had not seen her with my own eyes英语翻译 If we can only encounter each other,then I wish we had never encountered. .He acted as if he had never lived in England before 划分句子成分 acted as if he had never been abroad before.句子成分怎样划分? but we would feel lonely if we never had a friend.【英译汉】 But we would feel lonely if we never had a friend的同义句 i had a dream 请问下,.if we believe that true love never has to end Had I realized the consequences,I would never have done that.为什么是had而不是if,为什么要倒装?