神马作文网flew否定形式
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shouldn't再问：为什么不是needn't·？再答：啊啊啊啊，对不起，应该是shallnot,shan't.我是从来没用过'shan't'
mustn't
isnot
can’t
Negativeforms否定句形式Negativecontractions否定式构造仅供参考.
一般式don't一般单三doesn't过去式didn't
wasnot或wasn't
Hewon`t
改否定Thechidrendidn'tflykitesinthepark.一般疑问句Didthechidrenflykitesinthepark?对括号里部分提问Whatdidthechildrend
否：wedidn'tflykiteshighinthesky.一般：Didweflykiteshighinthesky?肯定：Yes,wedid.否定：No,wedidn't.
didn't
语气上的区别wouldn'tliketodo委婉地表示不情愿wouldlikenottodo更愿意不做这件事
mustn't
and是“和”的意思否定用or或者再问：真的吗，我英语书丢了，作业上这题做不来再答：绝对是的，相信我，希望能帮到你。满意的话请采纳
needtodo和needdoing的区别.1.人做主语用第一个物做主语用第二个2.don'tneedtodosthdon'tneeddoingsth
hasnot
Thespaceshipdidn'tflyintothesky.再问：Billywasafraid.(对afraid提问）Makeanoise.(改为否定句）MIkeeatsdessertsatthe
flewover:v.飞过(掠过)例句与用法:1.AsthereactorinChernobylcontinuestobum,militaryhelicoptersflewoverthesideand
unhappy
shenzhouVdidn'tflfintospace