The development of mechanical timepieces spurred the search for more accurate sundials with which to regulate them. 这个句子是一个定语从句,然后which是sundial,them是timepieces ,这个句子还原应该是rugulate timepieces with accurate sundials.这样就没有主语了。
...one boom which is now slowing down .given后面“the company gets”是个从句,我感觉given that 中that不应该省略。这样given +从句,given+名词或词组,不就没区别了吗?
we have not fixed the date ( )we shall start our holidays.A.andB.thatC.whenD.which
but current studies are begainning to place greater emphasis on the conditions under which we forget.想问一下,这个under which 如何理解?