Did they have a picnic in the part last saturday do you know

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Did they have a picnic in the part last saturday do you know?该成用IF或whether引导的句子

1.答案是Do you know if they had a picnic in the party last saturday?
或者Do you know whether they had a picnic in the party last saturday?
2.解释：Do you know .是主句,if/whether引导的宾语从句做know的宾语.Do you know 是主句,是一般现在时态,后面从句可以接任何时态,不用受前面主句时态的影响.但是如果主句是Did you know的话,那情况就不同了,因为主句是一般过去时态,后面的从句就要退一个时态,也就是过去的过去,如刚才这句就要换成Did you know they had had a picnic in the party last saturday?

Did they have a picnic in the part last saturday do you know what did you do last weekend?____went on a picnic. What did you do on the Open Day last Saturday? -Do you know if they ____on a picnic?-If the weather ___fine 翻译:if you have had a part-time job on saturday or in the sum What did you do last Saturday? Do you know when to have a picnic? 12.Do you know if we will go for a picnic this Saturday?I th Did you the sports meeting last year?A take part in B join C 句型转换 The students couldn't have a picnic last Saturday beacu 补全对话A:David,did you say you would have a party last Saturday Do you have a good time on Saturday evening?用(last Saturday