1、高三英语教学案句型解析1.【教材原句】If only there were more people donating money to charity collections！(P57)要是有更多的人为慈善组织捐款就好了！【句法分析】if only只要，要是该多好，表示一种不能实现或难以实现的愿望，后面的谓语动词用虚拟语气。(1)表示过去未曾实现的愿望，有“惋惜，后悔”之意，谓语动词用had done/been。If only I had taken his advice.我(当时)真该听从他的建议。(2)表示现在不可能实现的愿望，有“羡慕，力不从心”的口气，动词用一般过去式(be用were)
2、。If only I were younger!要是我年轻点儿就好了！(3)表示将来难以实现的愿望，有“向往”的口气，动词用would/should动词原形或一般过去式(be用were)。If only he wouldnt tell lies.但愿他不说谎就好了。归纳拓展(1)if only但愿，要是就好了，常引导虚拟语气的条件句或感叹句。(2)only if只要，only if本身不是一个固定词组。only是副词，用来修饰整个if从句。用于句首时，主句要倒装。If only we had arrived in time，we would not have missed the train.
3、要是我们及时到达就好了，我们就不会错过火车了。Only if a teacher has given permission is a student allowed to leave this classroom.只要老师允许学生就可以离开这个教室了。15完成句子(1)我同事要是有这个机会就好了！If only my colleague_ _ _！ (2)要是员工们有更多的钱，就能买辆汽车了。If only the staff_ _ _，they could buy a car. (3)要是我去年夏天在那个慈善机构做份临时工就好了。If only I_ _a temporary occupat
4、ion in that charity last summer.2.【教材原句】There is mud and water everywhere，making it difficult to travel from place to place.(P62)到处都是水和泥，这使得我们的旅程变得非常艰难。【句法分析】本句使用的是there be句型。(1)there be句型在英语中表示“什么地方或什么时间存在什么事物”。在这种结构中，there是引导词，be后面的名词是主语，句子的结尾是地点(时间)状语。There is a tall tree in front of the classroo
5、m.There will be a meeting at the conference room at 8 oclock tomorrow morning.(2)如果有两个或两个以上的主语，谓语动词be与主语的一致问题，要采用就近一致原则。There is a pen，two books，and many pencils on the desk.(3)there be结构有不同时态的形式，而且可以和各种助动词、情态动词连用。There was a meeting in our school yesterday.There have been many great changes in our
6、country since then.There cant be any mistakes in his passage.(4)there be结构中的谓语动词be，有时可用seem to be，happen to be，is likely to be或半系动词remain，stand，lie，go，exist，follow，live，come，occur等替换。There is likely to be something wrong with his computer.Once upon a time there lived a monk in the temple.(5)there be
7、句型的非谓语形式。There being no time left，we have to hurry.(Because there is no time left.)(独立主格结构作状语)There having been no water for 2 days，the travelers were all very thirsty.(Because there had been no water for 2 days.)(独立主格结构作状语)What is the chance of there being an election this year？(there be的动名词形式作of的宾
8、语)I expect there to be many chances for him to get the job.(there be的不定式结构作expect的复合宾语)It is natural for there to be a generation gap between the parents and their child.(there be的不定式结构作真正的主语)16用所给动词的适当形式填空(1)There_(be)a chair and two tables in the room. (2)There_(be) no money in his pocket，he had to go hungry. (3)I expect there_(be)forty guests for the party. (4)It is necessary for there_(be) a dictionary with you. (5)What is the chance of there_(be) some good dictionaries in that bookstore?