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(1)強調句的it,是不指代任何內容的...lz可以百度一下強調句的語法。
it有指代用途的只能是形式主語/賓語,還有就是普通指代(跟they它們用法一樣)
it is clear that...,這裡it是做形式主語,指代的是that-clause,但是,這一個並不是強調句...
不是所有的it is...that..都是強調句的。
(2)【from Ron】
if you are directly describing historical events, you have to use a verb tense that can properly refer to past events. (by “directly” i mean as opposed to, say, discussing the implications of historical events on the present, or evaluating them from a present-day standpoint. in those kinds of contexts, the present tense could be quite reasonable.)
have swept強調的是vast tides已經發生了,它們的發生對現在仍然存在影響 |
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