原因状语从句:常由because, as, since和for引导。例如:Nonetheless, I am still in favor of space travel, for it has brought us many benefits. 时间状语从句:常由when和while引导。...
若not否定主句,最好在because之前用逗号,否则会引起歧义,如下句在没有特定上下文时就有两种解释。如: I didn’t go because I was afraid. (1) 我没有去是因为怕。 (2) 我不是因为怕才去。 不过若because之前有just修饰,一般认为not 是否定从句而不是主句。如: You sh...
1. because of : because后接的是一个句子(主谓宾);because of 后一般直接跟名词。例如: ?Because of the increasing number of machine—and as we noted before, machines magnify human effort—then anyone using a machine can get a higher wage than anyone no...
The giant panda, a sort of peaceful animal with unique white and black fur, has been listed as an endangered species because of its rarity. 此题是去年考过的,考前点睛班反复讲过的。 四级真题解析: 中国是世界上最古老的文明之一,构成现代世界基础的许多元...
一个简单句只能有一个主谓结构。其中可以有两个或以上并列谓语,但不可以在主语前后各有一个谓语。 2. 关系清楚 两个简单句不可以仅仅用逗号连接; 如为并列关系,须用并列连词,如and, or, but, so, for, while等; 如为主从关系,须在从句之前加从属连词,如since,because,...
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