1.Mr White has one child(how many提问）
How many _children_ _does_ Mr White _have_?
how many+可数复数名词；Mr.White第三人称单数，变成特殊疑问句时用does助动词（一般现在时），后面恢复成动词原形have。
2.Miss Green has no time today.(同义句）
Miss Green _is_ _busy_ today.
没时间就是“很忙”或“不自由（空闲），即be busy或be not free,该句主语Miss Green第三人称单数，故用is busy或isn't free
children do have
is busy
How many children does Mr White have?
Miss Green is busy today.
1.How many children does Mr. White have?
2.Miss Green is busy.
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