推荐回答（1个）
一般现在时 The sky is blue 。天空是蓝的。
Is the sky blue ？Yes it is 。天空是蓝的吗？是的。
现在进行时 She is swimming now。她现在在游泳。
Is she swimming now？Yes ，she is 。她现在在游泳吗？是的。
一般过去式 He ran （run 的过去式）yesterday。他昨天跑了步。
Did （do 的过去式）he run yesterday？yes，he is 。他昨天跑步了吗？是的。
一般将来时 She is going to buy a townhouse （别墅）。她将去买一幢别墅。
Is She going to buy a townhouse ？Yes ，she is .她将去买一幢别墅吗？是的。
现在完成时 liming have finished reading this book.李明看完了这本书。
Have liming finished reading this book？Yes he have李明看完这本书了吗？是的。
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