1. "否定+until (till)"结构,在否定词"no","not","never","little","few","seldom"等的后边所接用的 "until/ till",多数情况下译为"直到……才……","要……才……",把否定译为肯定。
Nobody knows what he can do till he has tried.
2. "not so…but"和"not such a …but"结构,这两个结构和"否定+but"的结构差不多,不同之点是这两个结构中的"but"是含有"that…not"意味的连续词,表示程度。可译为"还没有……到不能做……的程度","并不是……不……","无论怎样……也不是不能……"等。
He is not so sick but he can come to school.
3. "疑问词+should…but"结构,这个结构表示过去的意外的事,意为"none…but",可译为"除了……还有谁会……","岂料","想不到……竟是……"等。
Who should write it but himself?
4. "who knows but (that)…"和"who could should…but"结构,这个结构是反问形式,一般意译为"多半","亦未可知"等等,有时也可直译。
Who knows but (that) he may go?
5. "祈使句+and"和"祈使句+or"结构,"祈使句+and"表示"If…you…","祈使名+or"表示"if…not…,you。
6. "名词+and"结构,在这个结构中,名词等于状语从句,或表示条件,或表示时间。
A word, and he would lose his temper.
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