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r ages。▇very exciting discoveries have finally allowed scientists to reconstruct the most likely origins of cetaceans. ▇ in 1979, a team looking for fossils in northern pakistan found what proved to be the oldest fossils whale。答案見(jiàn)文末。這句話與被插入的句子話題一致,都是在講經(jīng)濟(jì)上依賴(lài)牲口這件事,所以應(yīng)插入第二個(gè)方框。this后面的名詞economic reliance on livestock一定在上一句里出現(xiàn)。this economic reliance on livestock in certain regions makes large tracts of land susceptible to overgrazing。 舉例關(guān)系for instance, for example例如,peers and older siblings have a major influence on how school children behave. for instance, young children often repeat bad words they hear from their friends or brothers and sisters。 轉(zhuǎn)折關(guān)系however, but, yet, nevertheless, on the other hand, etc。 時(shí)間關(guān)系then, next, later, finally, etc。現(xiàn)在,我們要講的是句子間的顯性關(guān)系,即通過(guò)明顯的邏輯連詞或副詞來(lái)體現(xiàn)句間關(guān)系。例如,to foster healthy relationships between children in a classroom, teachers should provide time for games and fun activities. having healthy relationships with their peers helps children gain confidence useful in other parts of their lives. (重復(fù)話題詞)before choosing a public or private school for their children, parents should take into account the cost. the price of a private school is usually much higher than that of a public school. (話題詞同義改寫(xiě))4. 過(guò)渡性詞和詞組(transitional phrases/transitional adverbs)上面講到的三種句間關(guān)系屬于隱性關(guān)系。例如,a woman is walking into our classroom. the woman is our teacher。s teachers are faced with a stark choi