练习题
82. He cleaned the glasses Carefully __________________ (以免它被弄坏了而变得不保暖).

83. Before each text our teacher will have a detailed explanation, which will _______________ (使文章易于学生理解).

84. This is a revision paper. When you do it, __________________ (你最好在你有问题的地方做个标记).

85. We were all surprised __________________ (当他宣布马上要辞职时).

86. We are happy that ________________(这次实验比预想的要简单得多).

参考答案
82.答案:for fear that it would be damaged and could not keep warm
[考点] ①“以免”for fear that；②被动语态；③“保暖”keep warm。
[点拨] ①“for fear that”表示“以免，唯恐”，其后从句中必须使用情态动词；②情态动词的被动语态是would+ be+过去分词。

83.答案:help make the text easy for students to understand
[考点] ①“有助于做某事”help do sth．；②“使某人易于做某事”make sth．easy for sb．to do。
[点拨] ①根据句意可知，“老师的讲解会帮助学生理解文章”，所以确定使用help do sth．；②“使文章易于学生理解”要使用make+形容词作补语结构。

84.答案:you'd better make a mark where you have questions
[考点] ①“最好做某事” you'd better do sth．；②“做标记” make a mark；③where引导地点状语从句。
[点拨] 首先确定句子主干为“你最好做个标记”，然后将“你有问题的地方”确定为“做标记”的地点状语，用 where引出。

85.答案:when he made it clear that he would leave office soon
[考点] ①时间状语从句；②“宣布”make clear；③“辞职”leave office。
[点拨] ①由“当……时”可确定本句为时间状语从句，用when引出；②“宣布”可译为make clear，然后将“要辞职”作为make clear的宾语从句译出。

86.答案:the experiment was much easier than we had expected
[考点] ①宾语从句；②比较结构；③过去完成时。
[点拨] ①由题干可看出本题考查happy的宾语从句，空白处需为完整的句子结构；②比较级表达法为“形容词比较级”+than，其中形容词比较级前可用much等词修饰，表示比较程度；③根据句子“实验比预想的简单得多” 验发生在过去，而预想应在过去的过去，所以需使用过去完成时。