1.Ifhisbusiness(hadbeenexpanded)atthattime,hewouldhavecalledustohelphim,buthegaveuphisinitialplan.这里为什么不用havebeen？2.（Themostdisturbingpart）aboutthenovelisthattheherodiesinthefinalchapter.

Question

1.If his business (had been expanded)at that time ,he would have called us to help him ,but he gave up his initial plan.这里为什么不用have been？
2.（The most disturbing part） about the novel is that the hero dies in the final chapter.

Answer 1

at that time在当时,表示已经发生的,要用过去完成时,have been 表示现在完成时
disturbing 加上ing v变成adj词
这个小说最让人烦扰的地方是在最后的章节英雄死了.