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187. descend ….from/ descendant of
188. be able to do, 做表语,不做定语
189. a, with b/a, together with b/a ,along with b/a, including b/a ,as well as b/ a besides b/a except b/a, no less than b/a, more than b, 谓动与A 保持一致。
190.引导状语从句表转折,when仅用于句首,但while/whereas可放在句首/句末
191. 不定式/-ING做主语,谓动用单数;A,插入语,VERB,VERB与A数保持一致
192. a body of/a collection of/a group of/ a set of/ a series of/ a portion of/an array of+复名,谓动用单数
193. 数词+单位词复数+OF+物质名词/不可数名词,谓动用复数
194. 主语从句做主,谓动一般用单数
195. after优于following
196. consequences 与 result from不能同时使用 |
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