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Review review the present perfect tense.
Task 1
【组内小展示】
先让学生自读Grammar Focus 中的句子,理解其意思并找出其疑难之处,若有必要,给予学生适当的帮助;再进行齐读后对词汇的用法及句型结构进行归纳(小组内讨论进行或可及时向老师求助)。最后,板书展示内容。
Task 2
1.【辨析】since 和 for
since: 自…...以来
1)since+表示过去时间点的词语
eg: He?has?stayed?here?since?5?o’clock.
2)since+ 时间段+ ago
eg: He?has?stayed?here?since?5?hours?ago.
3)since+ 从句(句子要用一般过去时态)
She?has?taught?English?since?he?came?here.
for: (长达):for+ 表示一段时间的短语(用来说明动作或状态持续的时间,因此句中的谓语动词也应该是延续性动词。)
He has kept the book for 2 weeks.
含有for,since的现在完成时的用法歌诀:
过去的动作或状态,一直持续到现在,for、since把时间带。
I have been a teacher ______ a year.
He has been at this school _______ 1992.
We have learned 1,000 English words _______ we came to this school.
Task 3
短暂性(短语)动词与延续性(短语)动词和与表示状态的短语之间的转化
1.?有些短暂性(短语)动词可转化为相应的延续性(短语)动词。常见的有:
become?→?be borrow?→?keep?
buy?→?have / own
catch a cold?→?have a cold
come?→?stay put on?→?wear
go to sleep?→?sleep? move to?→?live in
2.?有些短暂性(短语)动词可转化为表示状态的短语。常见的有:
leave?→?be away open → be open