Unit 16 The United States of AmericaReading The American south 形式 动词不定式 动名词 / 现在分词时态主动被动 主动 被动一般时进行时完成时 完成进行时to doto be doneto be doingto have doneto have been doneto have been doingdoinghaving donebeing donehaving been done 动词的各种时态 过去 现在 将来1 ,过去一般时 1 ,现在一般时 1 ,将来一般时 2 ,过去进行时 2 ,现在进行时 2 ,将来进行时 3, 过去完成时 3 ,现在完成时 3 ,将来完成时 4 ,过去将来一般时 4 ,现在完成进行时 4 ,将来完成进行时 5 ,过去将来进行时 6 ,过去将来完成时 7 ,过去完成进行时 8 ,过去将来完成进行时 diddo/doeswill dowas/were doingam/is/are doingwill be doinghad donehas/have donewill have donehas/have been doingwill have been doingwould dowould be doingwould have donehad been doingwould have been doing the Native Americathe independent War of Americathe Civil Warthe Great Depressionthe Civil Rights Moment“I Have A Dream”“Gone With The Wind”“the Declaration of Independence”George WashingtonAbr