hitherto是一个雅思常考词汇，这个词的常用解释为ad. 到目前为止， 迄今，这个词在很多英文原版小说中怎么应用呢，今天小编就带您了解一下。
在儒勒·凡尔纳的《海底两万里》里，有这样的句子出现：
-- If it was a whale, it surpassed in size all those hitherto classified in science.
-- "You have hitherto only visited the submarine depths by daylight, under the brightness of the sun.
-- I did not think so, for every attempt to reach that point had hitherto failed.
在查尔斯·狄更斯的《老古玩店》里，有这样的句子出现：
-- 'And this,' said Miss Brass, raising her head, with which she had hitherto sat resting on her hands, and surveying him from head to foot with a bitter sneer, 'this is my brother, is it!This is my brother, that I have worked and toiled for, and believed to have had something of the man in him!'
在赫伯特·乔治·威尔斯的《时间机器》里，有这样的句子出现：
-- Happily then, when it was not too late, I thought of a danger I had hitherto forgotten, and reaching over the bars of the machine I unscrewed the little levers that would set it in motion, and put these in my pocket.
-- That is what dismayed me: the sense of some hitherto unsuspected power, through whose intervention my invention had vanished.
-- Going to the south-westward towards the rising country that is now called Combe Wood, I observed far-off, in the direction of nineteenth-century Banstead, a vast green structure, different in character from any I had hitherto seen.
-- Hitherto I had merely thought myself impeded by the childish simplicity of the little people, and by some unknown forces which I had only to understand to overcome; but there was an altogether new element in the sickening quality of the Morlocks a something inhuman and malign.
-- And when other meat failed them, they turned to what old habit had hitherto forbidden.
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