答案解析:
1.答案:not having been committed/devoted to education
詳解:
考查名詞作表語:動名詞作表語時,動名詞與主語通常是對等的關系,主語,表語可互換位置。
考查時態:表語動詞未投身于發生在遺憾之前,一直表明這一動作持續了一段時間,故用完成時。其否定式為not having+過去分詞。
考查短語:投身于,用be committed to 或者be devoted to。
2.答案:four times the size of the previous one/four times as big/large as the previous one
詳解:
考查倍數的表達:是...的多少倍,可以表達為X times + as + a/ad. +as 或者 X times + the size/length/width/height of…