If I had known about the meeting, I ___ it yesterday.
答案和讲解
答案：would have attended
与过去事实相反的假设常用 If + had done，主句用 would have done。因此选 would have attended。
想一想：条件说的是过去没有发生的情况。
题目和讲解
高二 · 英语 共 12 题
打开学习资料 →___ the experiment failed, the team learned something useful.
答案和讲解
答案：Although
Although 引导让步状语从句。Because of 后接名词性结构，不能直接接这里完整的从句。
想一想：前后表达“虽然失败，但有收获”。
A report says, “The results suggest a link, but do not establish causation.” What is supported?
答案和讲解
答案：An association, not a proven causal effect
报告支持存在某种联系，但没有证明因果。suggest 的语气也弱于 prove。
想一想：区分 a link 与 causation。
My brother, ___ lives in Chengdu, will visit us.
答案和讲解
答案：who
非限制性定语从句指人且缺主语，用 who；此处不能用 that 或 what。
想一想：逗号隔开的从句补充说明一个人。
___ impressed me most was her patience.
答案和讲解
答案：What
What 在主语从句中充当 impressed 的主语，整体意为“最让我印象深刻的事情”。
想一想：从句中缺少“使我印象深刻的事物”。
___ the report, she turned off the computer. 表示先写完再关机。
答案和讲解
答案：Having finished
Having finished 表示她先完成报告；逻辑主语仍是 she，动作先于 turned off。
想一想：先发生的主动动作可用 having done。
It was on Monday ___ we received the letter.
答案和讲解
答案：that
We received the letter on Monday 是完整句；强调时间状语时用 It was ... that。
想一想：去掉 It was ... that，剩下是否是完整句？
I wish I ___ more time now, but I am too busy.
答案和讲解
答案：had
now 和 busy 表明谈现在的遗憾，用 had；这里的过去式不表示愿望发生在过去。
想一想：wish 后用过去式表示与现在事实相反。
By the time we arrived, all the tickets ___.
答案和讲解
答案：had been sold
先于过去时点完成且 tickets 是被出售的，用过去完成时被动语态 had been sold。
想一想：在过去到达之前，票已经被卖出。
“The proposal is feasible, provided that enough staff are available.” 哪项转述准确？
答案和讲解
答案：The plan can work if there are enough staff.
feasible 表示可行，provided that 表示只要、如果；原句没有保证无条件成功或已实施。
想一想：provided that 引出一个条件。
“Bring a reusable bottle. Free drinking water is available beside the gym.” 这段文字主要在做什么？
答案和讲解
答案：Giving practical guidance
文字建议带水瓶并说明取水地点，主要提供实用指引，没有叙述历史或试验结果。
想一想：祈使句在让读者采取什么行动？
“The course is free, but registration is required by Friday.” 按通知，参加者应怎样做？
答案和讲解
答案：Register no later than the Friday deadline.
课程免费，但仍须不晚于周五的规定截止时间完成报名。by 强调最迟期限，不能翻成必须周四以前，也不能理解为无需报名。
想一想：by Friday 表示不晚于周五的截止时间。