82. I think that the meal is well worth 80 dollars with no discount(没有折扣的情况下值80美元).

　　【点评】worth:“值”，后跟动名词或名词;discount 折扣。

　　83. Confronted with the fierce competition from other corporations(面对来自其他公司的激烈竞争), the automobile manufacturer is considering launching a promotion campaign.

　　【点评】该句主语是the automobile manufacturer，横线处所填的是一个分句;be confronted with：面临(任务、困难)=face，所以也可填(facing the fierce competition……)

　　84. As far as hobbies are concerned, Jane and her sister nearly (almost) have nothing in common / hardly have anything in common(几乎没有什么共同之处).

　　【点评】have something in common有共同点。

　　85. Only after many failures have I realized that I cannot succeed merely by chance.(我才认识到仅凭运气是不能成功的).

　　【点评】only位于句首时用倒装。至于时态，可以用现在完成时，强调过去的事情对现在造成的影响“不能成功”，也可以用一般过去式

　　did I realize that I couldn't succeed merely by chance.

　　86. But for the survival instinct which nearly all creatures have, more species would have been extinct from the earth(更多的物种就可能已经在地球上灭绝了).

　　【点评】but for，“要不是”;这里考查与过去相反的虚拟语气，后面用would + have done。