He was seen ______ the classroom this morning.

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问题 He was seen ______ the classroom this morning.

选项 A、to enter
B、entering
C、have entered
D、enter

答案A

解析动词see后可以跟两种动词形式，即see sb．do stk和see sb．doing sth．。前者表示看到动作的全过程，后者表示看到正在进行的动作。分析句意可知，see sb．do sth．更合适。需要注意的是，英语中有一类动词，如let，make，have，see，hear，feel等在被动语态中，动词与宾补之间要用不定式to连接。所以本题中see后面的动词要加to。

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本试题收录于：大学英语三级B级题库大学英语三级分类

大学英语三级B级

大学英语三级

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He was seen ______ the classroom this morning.

大学英语三级B级

大学英语三级

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TheUnitedStatestakesabiggershareoftheinternationalstudentmarketthananyothercountry.However,with22%ofthetota

Thebenefitsofquittingsmoking—reducedriskofcancerandmanyotherhealthproblems—areknown.Butformillionsofsmokers,t

Parentsareoftenupsetwhentheirchildrenpraisethehomesoftheirfriends.Theymayeven【T1】______themofdisloyalty,ormak

Thefollowingisaninstructionofwritingatripreport.Afterreadingit,youshouldcompletetheinformationbyfillinginth

A—STANDONENDB—PROTECTAGAINSTHEATC—KEEPINDARKPLACED—THISSIDEUPE—OPENHERE

Newinventionsareappearingeverydaytomakeourliveseasier,longer,warmer,speedierandsoon.Butonlyafewinventorsde

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脑疝形成时，不可以

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A．慢性支气管炎合并阻塞性肺气肿B．肺炎球菌肺炎C．原发型肺结核D．中叶综合征E．肺栓塞可发生三肺脓肿

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