The eraser _(be not) his .Please_(play)the game now._(be)Sam's watch old.
问题描述：
The eraser _(be not) his .Please_(play)the game now._(be)Sam's watch old.
同上
答
is not The eraser 是单数,而且没有规定是什么时态一般用一般现在时所以是is not
play 这是一个祈使句,谓语动词用原型
Is 这个句子翻译成陈述句是Sam's watch is old Sam's watch 是一个单数跟第一个一样没有规定时态,倒一下就是疑问句了