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as if和as though引导的从句所叙述的情况与事实相反时，从句的谓语动词多用虚拟语气。在虚拟语气结构中，用________时态来表示现在的情形；用________时来表示过去的动作或状态；用________时表示正在进行的动作；用________时表示将要发生的动作。
当as if和as though从句的主语和主句主语一致，且从句中含有系动词be的某种形式时该主语和系动词可以省略。
例如：John paused as if(he was)expecting Mary to speak．
1. It looks ____ it is going to ram.
看起来好像天要下雨.
2. He talks ___ he knew where she was.
他谈话的样子似乎他知道她在什么地方.
-----Did Mr Black resign his post as principal?
-----No,________ was telling a lie.
A. whoever told you that B. those who told you that
C. No matter who told you D. Anyone told you that
A 句意：Mrs Black 辞去校长职务了吗？没有，不管谁告诉你的，他都在说谎。Whoever引导的主语从句，相当于anyone who。如果选B，则those作主语，谓语应用were。 C项引导让步状语从句，不能引导主语从句；D项错误，应改为Anyone who told you that。
查看习题详情和答案>>现在全国很多学校出现了一种新的教学方式：小组合作学习方式(group—centered studying)。在此之前，常用的方式是“填鸭式教学(forced—feeding method of teaching)”：这两种方式各有特点，请你以“Forced-feeding teaching or group-centered studying”为题．按照以下要点写一篇100词左右的短文：
1．填鸭式教学：老师讲得多，把知识灌输给学生，课堂气氛沉闷，学生缺乏主动性；
2．小组合作学习：老师讲得少，同学们一起讨论、相互学习。有学习的积极性，但部分同学容易养成偷懒的习惯；
3．你喜欢的方式和理由。
查看习题详情和答案>>阅读下列各小题,根据每句后的汉语提示,用句末括号内的英语单词完成句子.
1. The scientists finally arrived in ____________________the North Pole. (call)
科学家们最终到达了所谓的北极.
2. ____________________to California is its pleasant climate and relaxed lifestyle. (what)
吸引人们到加利福尼亚的原因在于它宜人的气候和轻松的生活方式.
3. Most applicants know ____________________getting a visa.(little)
大部分的申请者都知道他们几乎没有机会获得签证.
4. The fact __________________in Europe was obvious.(arrive)
显然,他们在很久以前就到达了欧洲.
5. The customs office is ____________________when you enter or leave a country. (inspect)
海关就是你进入或者离开某个国家时你的行李被检查的地方.
6. It seemed as if ____________________a cheat who pretended to know much in the field. (socalled)
看来那个所谓的专家好像是个骗子,他假装自己对这个领域很了解.
7. ____________________ that the disease was almost incurable.(what)
众所周知,这种病无药可救.
8. That large quantities of top soil were polluted severely ____________________.(know)
众所周知的是大量的表层土被严重污染.
9. What surprised them was ____________________the flu. (die)
令他们吃惊的是那个强壮的男子死于流感.
10. It was difficult for students to take in ________________in class.(teach)
学生要理解老师在课堂上教的东西很难.