So far, all of the infected people are thought _______ the flu after direct contact with sick birds.

A．to have caught     B．having caught      C．to catch           D．being caught

 

【答案】

A

【解析】

試題分析：考查句型：Sb/sth is thought to do/to have done…某人/某物據(jù)認(rèn)為正在做…/已經(jīng)做…,如果不定式的動(dòng)作是將要發(fā)生，用一般式，如果不定式的動(dòng)作是先于主句的動(dòng)作發(fā)生，用不定式的完成式，句意：到現(xiàn)在為止，所有的感染的人都被認(rèn)為是在直接和病禽有過接觸。選A。

考點(diǎn)：考查固定句型：

點(diǎn)評(píng)：Sb/sth is said /believed/thought to do/to have done…某人/某物據(jù)說正在做…/已經(jīng)做…,這個(gè)句型可以變成：It is said/ believed /thought that…,還要注意用不定式的一般式還是完成式。

 

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　　Russian President Putin named Time magazine’s“Person of the Year”
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    C．How Sudan1 dye got its name?

    D．Pay attention to the food safety

 

 

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