求英文达人帮我分析这几个句子错哪了（3）
用现在完成时,现在完成进行时,一般过去时填空.
1.Roy(hasvisited)YellowstoneNationalParklastyear.
2.In1872,Congress(maked)theYellowstoneareaapark.
3.(Have)you(saw)anygrizzlybearswhenyou(were)intheparklastyear?
4.Twoyearsago,we(havetried)tomakeareservation.
郭玉辉回答：
1.Roy(hasvisited)YellowstoneNationalParklastyear.
lastyear.是过去时,括号里应该填visited.
2.In1872,Congress(maked)theYellowstoneareaapark.
1872年是过去时,括号里应该用make的过去时made.
3.(Have)you(saw)anygrizzlybearswhenyou(were)intheparklastyear?
同1,应该是填did/see(问句中动词还原)/were(when引导的从句中动词不还原)
4.Twoyearsago,we(havetried)tomakeareservation.
我觉得也是过去时,填tried
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