[00:20.69]在表示过去意义时，常用实意动词，而不用于情态动词

[00:29.78]They need to hand intheir homeworktomorrow.

[00:51.99]Did they need tothink it over?Need they think itover?(错)

[02:03.25]We need to practiseEnglish more often,don't we?

[02:22.19]You needn't tell herthe news,need you?

[02:59.30]You needn't borrowthe book from thelibrary.

[03:19.71]You don't need toborrow the book fromthe library.

[03:47.58]You don't have toborrow the book fromthe library.

[03:56.81]don't have to=don't need to“不必”，表示没有义务或必要做某事

[04:06.72]Who dares to gothere?I don't dare to askher.

[05:03.57]4 need+名词

[05:22.78]The school needs Eng-lish teachers badly.They don't need anymoney.

[06:10.11]名词+need+doing=need to be done

[06:30.05]The garden needswatering.The room needs clea-ning.