what does that sign means?用到了哪些语法现象 为什么是does儿不是do
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what does that sign means?用到了哪些语法现象 为什么是does儿不是do
这是一个特殊疑问句,句子主语是that sign,是第三人称单数,所以当然用does,而不能用do了.
再问: 那she must have a good rest . 为什么have不是has呢。mean和must都是实意动词么。(对不起,还有许多不懂的,请多指教)
再答: must是非常常见的情态动词啊,而情态动词之后加的就是动词原形,所以只能用have,has是have的三单形式,适用于该动词单独做谓语的情况。 如:She has a good rest every day.
再问: 那she must have a good rest . 为什么have不是has呢。mean和must都是实意动词么。(对不起,还有许多不懂的,请多指教)
再答: must是非常常见的情态动词啊,而情态动词之后加的就是动词原形,所以只能用have,has是have的三单形式,适用于该动词单独做谓语的情况。 如:She has a good rest every day.
( )What( )this sign( A.do;means B.does;mean C.does;means D.d
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