一般过去时的否定是didn'tdo,现在完成时的否定是haven'tdone或hasn'tdone或hadn'tdone
一般过去时的否定是didn'tdo,现在完成时的否定是haven'tdone或hasn'tdone或hadn'tdone
一般过去时的否定是didn'tdo,现在完成时的否定是haven'tdone或hasn'tdone或hadn'tdone
一般过去时的否定是didn'tdo,现在完成时的否定是haven'tdone或hasn'tdone或hadn'tdone
英语否定句:
凡句中有动词be(am/is/are/was/were),情态动词(can/could/may/must/will/would/shall/should/...),助动词(have/has/had完成时)的,变否定句时直接在这些词的后面加not,否则要加上相应的助动词don't/doesn't(一般般现在时第三人称单数用doesn't),didn't(一般过去时)
注:加了助动词之后原来的动词要用原形.如:
1.Heisn'taworker.(一般现在时)
2.Hedoesn'tgotoshcoolonfoot..(一般现在时)
3.Hecan'tswim.(一般现在时)
4.Theyweren'tathomeyeste.(一般过去时)
5.Hedidn'tgotoschoolbybusyesterday..(一般过去时)
6.Hewon'tgowithyoutomorrow.(一般将来时)
7.Hehasn'tfinishedhishomework.(现在完成时)
8.Hehadn'twrittentoherwhensheranghimup.(过去完成时)
9.Wearen'tworkingnow.(现在进行时)
10.Theyweren'thavingclassesatthistimeyesterday.(过去进行时)
11.Theywouldn'ttellyouaboutit.(过去将来时)
12.Ishallnotgowithyou.(一般将来时)
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