test fifteen
名词性分句中的虚拟语气
虚拟式常用于出现在wish, would rather, suppose, imagine之后的that分句中，表示一种臆想的（通常是不可能发生的）情况。例如：
i wish it were spring all the year round.
i'd rather i were not at the site of the accident.
在“it's time that分句”结构中，that分句中应使用一般过去时。例如：
it's time that i went.
在if i were you 这一分句中，were不能换成was,应当特殊对待。例如：
were i to do it （if i were to do it）, i should rely on you.
近义词辨析
surprise, amaze, astonish, astound
这组词均含有“使人惊奇、惊异”的意思。
surprise
指因出乎意料的、突然的事或前所未有的人或特殊的事而感到惊讶。
it doesn't surprise me that his parents did not allow himto marry beneath him.他的父母不允许他同地位比他低的女子结婚，这并不使我感到惊讶。
amaze
强调对意外的事感到迷惑，或表示惊叹之情。
he's amazed that she should get promoted over his head.他对她得以迈过他而提升感到惊异。
astonish
指对很不平常的事大为吃惊，难以置信。
it astonished him that his son had been caught cheating in the exams.他的儿子考试作弊被抓住了，这使他大为吃惊。
astound
强调完全出乎意料，用以往经验知识无法解释，其惊讶程度很强。
the enormous changes in the quality of life of the inhabitants astounded us.城镇居民生活质量的巨大变化令我们惊愕。