英语疑问句默认单数还是复数

很简单，单数用is/does，复数用are/do，疑问句把is/are/does/do提前

单数、复数根据说话人的意愿而定，如果问的是一个东西，就用单数，如果是问好几个东西，就用复数。

如：

Is  this  a  sheep?

Are  these  sheep?

What  is  this?

What  are  these?

01

What time do you ＋ V ...?

结构︰ 问句：What time＋do／does＋主词＋原形动词…

此句型意为“某人几点做某事”助动词 do 或 does 的选择依主词而定，若主词为第三人称单数，用 does其它用 do。

What time do you get up? I usually get up at six.  你几点起床我通常六点起床。

What time does he go to bed? He usually goes to bed at ten.他几点就寝他通常十点就寝。

2，How many seasons are there in a year? There are four seasons in a year.

一年有几个季节一年有四季。