What's that smell?

　　Oh, no! Something's burning. 烧糊了

　　I wonder what that smell is?

　　I wonder where that smell is coming from?

　　What's that noise?

　　It's my alarm clock.

　　What is this line for?

　　I have no idea. 我也不知道

　　Why are people lined up?

　　What are you up to? 打…的主意、从事…

　　What are you up to tonight?

　　Why should I tell you?

　　What's going on? 是什么呀?

　　May I ask you a question?

　　Sure, what is it?

　　What does “drowsy” mean?

　　It means “sleepy”.

　　What's this? / What's that?

　　It's a foldable bed. 这是折叠床

　　Who does this belong to? /Whose is this?

　　To whom does this belong?

　　That's my car.--Which one?

　　What's it called? --It's called tempura.

　　What do you call it?

　　What did you get for me?

　　I got you a doll. 洋娃娃

　　Where are you headed? 去哪儿? --Home.

　　Where are you going?

　　Where are you off to?

　　For example? / For instance? 比如说?

　　How often? /How frequently?隔多久

　　How often should I take this medicine?

　　Five times a day.

　　What does USA stand for?

　　It stands for the United States of America

　　How long? *询问距离、尺寸、时间

　　How long have you dated her?

　　About four years.

　　How long is her hair? --Very long.

　　How early should we leave?

　　Let's leave at 7∶30 am.

　　How short? 多短?

　　How fast? 多快?

　　How far? 多远?

　　How quickly? 多快的速度?

　　How slowly? [速度、动作]多慢?

　　How soon? 时间/期间]多快?

　　How late? [时间/时刻]多晚?

　　How much/many? [不可数/可数]多少?

　　How big/large? 多大?

　　How small/little? 多小?

　　When does summer break start?

　　On July 25th.

　　When was the opening ceremony?

　　January 8th.

　　Do you know the meaning of this word?

　　How do you pronounce this word?

　　Climb. The “b” is silent.

　　What's the difference between A and B?

　　They're about the same. 它们几乎相同。