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1.基本句型 A.因果 On account of/owing to/due to+ N For the reason that/as/since+句子 It is due to____that eg：It is due to his persistence and perseverance that he eventually reached his acme.(强调句) derive/arise/stem from来源于 eg：His success derives from his persistence and perseverance. ascribe A to B 归结于 eg： His success can be ascribed/attributed to his persistence and perseverance B.条件 A serves as a catalyst for B(our further success) If/on condition that/provided that/as long as________ C.让步 Despite the fact that/regardless of 2.经典句型 A.倒装 Only via(by/through /with/when/after) __do/did/can we__ eg： Only after going to the beach of Hawaii will I know aboutAmerican typical type of spending leisure time. Hardly/Seldom/Scarcely can__ eg： Hardly can we imagine a world/our life without/devoid of So +adj+主谓倒装+that__ Not only 主谓倒装 but also eg： Not only should education prepare children to compete Not only do people care their economic needs，they but also want to meet their spiritual needs. | 
