名师点拨 (1)suggestion,advice,order,request,requirement等名词的同位语从句需用“(should+)动词原形”。 (2)常见的同位语从句直接放在抽象名词之后,分隔式同位语从句是指抽象名词和同位语从句之间出现谓语动词,以平衡句子结构,避免头重脚轻。例如:The fact is clear that he is innocent in the accident.事实很清楚:在这起事故中他是无辜的。
二、易混连接词的辨析 连词 主要区别 典句例示 that和what的区别 that引导名词性从句时,在从句中不充当任何句子成分,也没有任何含义;而what引导名词性从句时,在从句中都要充当一定的句子成分,并有相应的含义 ①The problem is that we don't have enough money. 问题是我们没有足够的钱。 ②His writing is so confusing that it's difficult to make out what it is he is trying to express. 他的笔迹非常混乱,很难弄清他想表达什么意思。 同位语从句与定语从句中that的区别 同位语从句中的连词that只起连接作用,在从句中不充当任何句子成分;而定语从句中的关系代词that在句中作宾语或主语,定语与先行词有修饰关系 ①There is clear evidence that the most difficult feeling of all to interpret is bodily pain. 有清晰的证据证明最难诠释的感情是身体上的疼痛。(同位语从句) ②The hope(that) she expressed is that they would come to visit China again. 她所表达的希望是他们能再次访问中国。(定语从句) 连词 主要区别 典句例示 whether和if的区别 whether和if在宾语从句中可以互换,但是作介词宾语时连接词一般用whether It all depends on whether they will come back. 那取决于他们是否回来。 后面直接跟or not时只能用whether I didn't know whether or not he had arrived in Wuhan. 我不知道他是否已到达武汉。 主语从句、表语从句中只能用whether Whether the meeting will be put off has not been decided yet. 会议是否被推迟还未被决定。 whether可以引导同位语从句,用以说明前面的名词的内容,而if不能 We ought to discuss the question carefully whether we can do it or not. 我们应当仔细讨论这个问题:我们是否能做它。 whether常与or连用表示一种选择,if不能这样用;whether也可与动词不定式连用但if不能 ①The question of whether they are male or female is not important. 他们的性别问题并不重要。 ②I don't know whether to leave or not. 我不知道是否要离开。
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