1.with引導(dǎo)的獨立主格結(jié)構(gòu)作狀語
獨立主格是his son,
考察動詞與獨立主格的語法關(guān)系（注意,不是邏輯關(guān)系,可能會有被動語態(tài)）
〉主謂-現(xiàn)在分詞
〉動賓-過去分詞
至于 having been enrolled,從來沒有看到過!
記住,考非謂語的選擇題里一旦出現(xiàn)含有/having been/的選項,99.9%是錯的,還有0.1%我沒見過.
舉例-He walked in with his leg transplanted,能理解為什么不是/with his leg having been transplanted/不?因為累贅太多了.
2.than引導(dǎo)的比較狀語從句特殊語序(這里和省略有毛關(guān)系啊啊啊?!)
當(dāng)than引導(dǎo)比較狀語從句,并且從句主語不是代詞（I,you,she,he,they,it）時,把從句謂語助動詞提前,沒有助動詞時提前/do/.
舉例-Ichthyosaurs(魚龍) had a higher chance of being preserved than did terrestrial creatures（陸地生物） because,as marine animals,they tended to live in environments less subject to erosion.
魚龍比起陸地生物有著更多的機會被保存下來,因為作為海洋動物,它們趨向于居住在更少受侵蝕影響的環(huán)境中.
3.這是唯一一點樓上答對的.
把with ___ 移動到最后你瞬間明白了.
BTW,/ it/指代/being the parent of a child with special needs /.