英语四级语法教程汇总和更新

1) 不定冠词位置不定冠词常位于名词或名词修饰语前。注意：　a. 位于下列形容词之后： such，what，many，half，I have never seen ... [查看全文]

1）人称代词的主格在句子中作主语或主语补语，例如：John waited a while but eventually he went home.约翰等了一会儿，最后他回... [查看全文]

情态动词也可以和动词进行形式或完成进行形式构成谓语：表示应当正在……，想必正在……的意思。【例如】Why should we be sitting he... [查看全文]

现在分词的完成被动式表示分词的动作发生在谓语的行为之前，且动作由逻辑主语所承受（即与逻辑主语是被动关系）。【例如】Having been gi... [查看全文]

1）修饰形容词或副词时，通常放在前面。2）当句子的谓语动词是行为动词时，频度副词一般放在谓语动词之前。句中有be或助动词、情态动词时，... [查看全文]

现在分词的完成式主要用在状语中，表示这个动作在谓语所表示的动作之前完成。【例如】Having succeeded in the last examination, sh... [查看全文]

Completed in three months. This is one of the experiments being carried on in our laboratory.Being surrounded by... [查看全文]

dare用作情态动词时，表示敢于这个意思，主要用于疑问句、否定句及条件从句。【例如】Dare you go home alone?Tom dare not go int... [查看全文]

世界英语Dr. Jill, I hear you're going on a trip nextweek.吉尔博士，我听说你下周要去旅行。Yes, I'm going to Sr... [查看全文]

过去完成进行时What's on your mind today, Dr. Jill吉尔博士，你今天想讲什么？Hi John, I was looking back through my... [查看全文]