我在公交車里吃午飯可以說成：I'll have lunch in the bus嗎?有人說 on the bus這個搭配更常見，但是 on the bus，總給我一種在車頂上的感覺，到底應(yīng)該怎么理解呢？

The phrase on the bus is quite standard and normal.

on the bus這個短語是一個很標(biāo)準(zhǔn)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.

這里on的使用，并不是意味著這個人在位置層面的on?；旧希绻粋€人說他搭公交車旅行，那么就應(yīng)該表達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.)

當(dāng)一個人要搭乘公交車，我們就會說這個人正在get on a bus。（并且，當(dāng)他下車時，我們會用get off the bus來表達）

究竟什么時候用on什么時候用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.)

如果交通工具沒有隔間，你就用on。(自行車、摩托車、滑板等)(注:有不是完整隔間的，如敞篷車、敞篷艇等，也算作隔間；幾乎就是有東西遮擋在你周圍就算是了。)

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.)

盡管很奇怪，如果交通工具大到可以讓你自由移動，你也用on。（公共汽車、火車、大型船舶、客機等;任何有過道或走道的東西。)

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

除此之外，你就用in。（汽車、私人飛機、獨木舟等）

下面皮卡丘總結(jié)一下乘坐不同交通工具該如何用英語表達！

一、使用介詞

①by+交通工具：“乘坐某種交通方式”

by后名詞前無任何修飾語，且只能用單數(shù)。

例如：

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

他坐火車來的，但他妻子坐汽車來的。

Travelling by elephant is great fun.

騎象旅行很有趣。

02、in/on + 表示交通工具的名詞 ,“乘/坐某種交通工具”，名詞前常有冠詞、指示代詞等修飾語，不限定單數(shù)或復(fù)數(shù)。

例如：

We are going there in a bus.

我們將乘公共汽車去那里。

She went out on her new motorbike.

她騎著她的新摩托車出去了。

03、by+“水、陸、空等”來表示交通方式。

by water 由水路；by road 由公路；by rail 由鐵路

例如：

Shall we go by land or by sea ?

我們是由陸路去還是由水路去？

It saves a lot of time to travel by air.

乘飛機旅行可以節(jié)省許多時間。

04、on + 表示人或動物特定身體部位的名詞，表示“步行或騎馬'’名詞前不可加修飾詞。

例如：

She usually goes to school on foot.

她通常步行上學(xué)。

Our friends arrived on horseback.

我們的朋友是騎馬到的。

二、使用動詞

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 .

史密斯先生常坐火車去上班。

walk / drive / ride / fly to+具體地點，

02、如果地點為 here , there , home 等，可省略介詞 to。

I walk to school . You can drive there .

我步行去學(xué)校。你們可以開車去那兒。