[析] how often用来提问某一动作经多久就要发生一次,也就是提问发生的频率。how soon是问从现在起还有多久。
21? Changjiang River is ___ river in China?
A. long B. longer
C. longest D. the longest
[答案] D.
22? I'll work ___ I can.
A. so hardly as B. so hard as
C. as hardly as D. as hard as
[答案] D.
[析] hard可用作形容词和副词,如:The desk was made of hard wood? 又如:It is raining hard。 而 hardly 是副词,其词义是"几乎不",如:Hardly did I sleep last night. 我昨晚几乎没有睡觉。而且hardly用于句首时要采用倒装语序。as…as即可以用于肯定句,也可以用于否定句,但so…as则只能用于否定句中。
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