1．补全要点句 (黑体部分请利用本单元所学词汇)
①除了英国外，美国、澳大利亚也对英语的发展做出了重大贡献。 Aside_from_Britain，the USA and Australia also have_made_great_ contributions_to the development of English. ②他们的英语互不相同。他们不会被误解。
Their English differs_from each other.They can't be_mistaken. ③英语是很多国家的官方语言之一。它在国际交流中起着非常重要的作用。 English is one_of_the_official_languages in many countries.It plays_an_ important_part_in the international communication. ④可以肯定的是大部分的科学成果是用英语写的。学好英语是很必要的。 It is_certain_that most scientific achievements are in English.It is_necessary _to_learn English well. ⑤很多网站都使用英语。 Many websites are in_English. ⑥现在学英语很方便。 It is_convenient_to_learn it now. 2．升级平淡句
(1)利用though引导让步状语从句升级1中的句②
Though_their_English_differs_from_each_other，they_can't_be_mistaken. (2)利用which引导非限制性定语从句升级1中的句③
English_is_one_of_the_official_languages_in_many_countries，which_plays_an _important_part_in_the_international_communication. (3)利用连词so升级1中的句④
It_is_certain_that_most_scientific_achievements_are_in_English_so_it_is_necessary_to_learn_English_well. 3．衔接成美文 (注意利用适当的过渡衔接词汇：in fact，therefore) Aside from Britain，the USA and Australia also have made great contributions to the development of English.In fact，though their English differs from each other，they can't be mistaken.English is one of the official languages in many countries，which plays an important part in the international communication.It is certain that most scientific achievements are in English so it is necessary to learn English well.Many
websites are in English.Therefore，it is convenient to learn it now.
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