“在公交车上”到底是in the bus还是on the bus？

我在公交车里吃午饭可以说成：I'll have lunch in the bus吗?有人说 on the bus这个搭配更常见，但是 on the bus，总给我一种在车顶上的感觉，到底应该怎么理解呢？

The phrase on the bus is quite standard and normal.

on the bus这个短语是一个很标准很普遍使用的搭配。

The use of on does NOT imply that the person is on the roof. Basically, if the speaker is taking a long trip by bus, that person is said to be on the bus during the entire trip.

这里on的使用，并不是意味着这个人在位置层面的on。基本上，如果一个人说他搭公交车旅行，那么就应该表达成他在旅行中一直是 on the bus 的。

When a person is boarding a bus, we d typically say the person is getting on a bus. (And at the end of the trip, it would also be quite normal to say that person is getting off the bus.)

当一个人要搭乘公交车，我们就会说这个人正在get on a bus。（并且，当他下车时，我们会用get off the bus来表达）

究竟什么时候用on什么时候用in？

If there is no compartment involved, you get ON it. (bicycle, motorcycle, skateboard, etc.) (Note: partial compartments, such as those of convertible cars or open-topped boats, count as compartments; pretty much anything where the vehicle at least partially surrounds you.)

如果交通工具没有隔间，你就用on。(自行车、摩托车、滑板等)(注:有不是完整隔间的，如敞篷车、敞篷艇等，也算作隔间；几乎就是有东西遮挡在你周围就算是了。)

Oddly enough, if the transportation is large enough to allow you to move around freely, you also get ON it. (Bus, train, large boat, passenger plane, etc; anything with an aisle or walkway.)

尽管很奇怪，如果交通工具大到可以让你自由移动，你也用on。（公共汽车、火车、大型船舶、客机等;任何有过道或走道的东西。)

Otherwise, you almost certainly get IN it. (Car, personal aircraft, canoe, etc.)

除此之外，你就用in。（汽车、私人飞机、独木舟等）

下面皮卡丘总结一下乘坐不同交通工具该如何用英语表达！

一、使用介词

①by+交通工具：“乘坐某种交通方式”

by后名词前无任何修饰语，且只能用单数。

例如：

He came by train, but his wife came by bus.

他坐火车来的，但他妻子坐汽车来的。

Travelling by elephant is great fun.

骑象旅行很有趣。

02、in/on + 表示交通工具的名词 ,“乘/坐某种交通工具”，名词前常有冠词、指示代词等修饰语，不限定单数或复数。

例如：

We are going there in a bus.

我们将乘公共汽车去那里。

She went out on her new motorbike.

她骑着她的新摩托车出去了。

03、by+“水、陆、空等”来表示交通方式。

by water 由水路；by road 由公路；by rail 由铁路

例如：

Shall we go by land or by sea ?

我们是由陆路去还是由水路去？

It saves a lot of time to travel by air.

乘飞机旅行可以节省许多时间。

04、on + 表示人或动物特定身体部位的名词，表示“步行或骑马'’名词前不可加修饰词。

例如：

She usually goes to school on foot.

她通常步行上学。

Our friends arrived on horseback.

我们的朋友是骑马到的。

二、使用动词

01、'take a +交通工具”表示交通方式，但是 bike 要搭配 ride。

take a bus , take a train , take a ship

例如：

Mr . Smith often takes a train to work .

史密斯先生常坐火车去上班。

walk / drive / ride / fly to+具体地点，

02、如果地点为 here , there , home 等，可省略介词 to。

I walk to school . You can drive there .

我步行去学校。你们可以开车去那儿。