【例】They have been to many cities in the south so far. 到目前为止,他们已经去过许多城市了。= They have been to many cities in the south up to now.
(2) without的意思是“无;没有”。它可以用来完成同义句的改写。
【例】Fish can’t live if there is no water. 鱼儿离不开水。= Fish can’t live without water.
(3) These satellites go round the earth and … 这些卫星围绕地球运行……
注意:客观存在的事实在表示一般过去时的句子中做宾语从句,依旧用一般现在时,表示客观真理。如:Our teacher told us that the sun is round.
7. Our knowledge of the universe is growing all the time. 我们对宇宙的认识一直在增长。
(1) knowledge是know的名词形式,作“知识;学问”讲,是不可数名词。one’s knowledge of…的意思是“对……的认识/了解。”knowledge 的前面若有定语修饰,可与a连用,表示“对……某种程度的了解”。
【例】Your knowledge of English is weak. He has a good knowledge
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