we need to water the flowers every day(改为否定句)3种we______ ______ _______ water the flowers every day.we______ ______ water the flowers every.we______ ______ _______ water the flowers every day.
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we need to water the flowers every day(改为否定句)3种we______ ______ _______ water the flowers every day.we______ ______ water the flowers every.we______ ______ _______ water the flowers every day.
we need to water the flowers every day(改为否定句)3种
we______ ______ _______ water the flowers every day.
we______ ______ water the flowers every.
we______ ______ _______ water the flowers every day.
we need to water the flowers every day(改为否定句)3种we______ ______ _______ water the flowers every day.we______ ______ water the flowers every.we______ ______ _______ water the flowers every day.
1.We (don't) (need) (to) water the flowers every day.(need作实义动词)
2.We (need) (not) water the flowers every day.(need作情态动词)
3.We (don't) (have) (to) water the flowers every day.(用have to改)
need not to.needn't to.don't need to.因为need可以做情态动词也可以作实义动词。当need做情态动词时在后面加not构成否定,当为实义动词时在前面加don't构成否定。