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Is your production on the decrease?
   你們的產量在減少嗎?

Is this information on the level?
   這消息可靠嗎?

Is the store open from 9 to 7?
   那家商店是從上午九點營業到晚上七點嗎?

Is there any cement over?
   有水泥多出來嗎?

Is there a parking lot nearby?
   附近有停車場嗎?

Is such a thing possible?
   這種事可能嗎?

Is it practicable to try to develop agriculture in desert regions?
   試圖在沙漠地區發展農業可行嗎?

Is Harry's prehistoric car still working?
   哈里那輛老式汽車還能開嗎?

Is rice the most productive food-bearing plant?
   稻子是不是產糧最多的植物?

Is the cup made of pure gold?
   這隻杯子是純金做的嗎?

Is it to be purely an educational organization?
   那將是一個純粹的教育機構嗎?

Is breakfast ready?
   早餐準備好了嗎?

Is this real leather or plastic?
   這是真皮的還是塑膠的?

Is that item selling?
   那商品銷路好嗎?

Is this condition set forth in the agreement?
   這一條件協議中有提到嗎?

Is he a good sport when he plays cards?
   他玩牌時經得起輸嗎?

Is the table steady?
   桌子平穩嗎?

Is swimming a strenuous exercise?
   游泳是很費力的運動嗎?

Is saccharin a good substitute for sugar?
   糖精是糖的良好替代品嗎?

Is he a good swimmer?
   他游泳游得好嗎?