職稱英語理工類考點同義詞組辨析

however,whereas,while,yet這組詞都含 而、然而、卻 等轉(zhuǎn)折的意思。
however: 然而、可是 語氣較弱, 聯(lián)接也較少松弛. 因此常被用來插人句子中間。
You ask me to do the work; I am afraid_ however_ that I amnot equal to it. 你請我做這事,然而,我恐怕不能勝任。
whereas : 而、卻、反之、其實 表示較為鮮明的對比或?qū)φ眨Z氣強烈,也較正式。
After the exhausting journey, he fell ill , whereas I was only alittle tired. 令人疲憊的旅行結(jié)束后他病倒了,而我只不過稍覺疲倦罷了。
while: 而、卻、雖然 表示對比,但語氣較弱。 While the doctors did all they could, they couldnt save her life;the next day after the operation,she died. 雖然醫(yī)生已盡其所能,但仍未救活她的命,手術(shù)第二天她就死了。
yet: 而、然而、可是,正式用語,讓步轉(zhuǎn)折的語氣較強烈,而且多指付出了努力,卻與預期結(jié)果或主觀打算相違背。常用短語:and yet 然而、可是:but yet 但是還
可還是. His speech was almost unintellgible , yet for some unknown reason I enjoyed it very much. 他的演講雖有些莫名其妙,但不知為何我卻非常愿意 聽。