He _____China since he _____ to China.
A learned , came                       B has learned , comes
C have learned , came                  D has learned ,came
D

試題分析:句意:自從他來到中國以后,他就了解了中國。結(jié)合語境可知本句主句描述的是現(xiàn)在已經(jīng)完成的動(dòng)作,故用現(xiàn)在完成時(shí)態(tài)。從句中描述的是過去某時(shí)發(fā)生的動(dòng)作,故用一般過去時(shí)態(tài)。選D。
點(diǎn)評:英語中的時(shí)態(tài)主要是借助于時(shí)間狀語與上下文語境來進(jìn)行判斷。解答此類題型,首先要注意句子中的時(shí)間狀語,如果沒有則要通過分析上下文,結(jié)合語境來判斷句子的時(shí)態(tài)。英語疑問句中一般具有時(shí)態(tài)上的對應(yīng)關(guān)系,注意結(jié)合這一特點(diǎn)進(jìn)行區(qū)分。
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