归根到底

guī gēn dào dǐ

after all, in the final analysis, ultimately

你到底想去哪里？

nǐ dào dǐ xiǎng qù nǎ lǐ？

Where do you want to go?

这本书到底有多长？

zhè běn shū dào dǐ yǒu duō cháng？

How long is the book?

这个电影到底好不好看？

zhè gè diàn yǐng dào dǐ hǎo bù hǎo kàn？

Is this movie any good?

海底很美。

hǎi dǐ hěn měi。

The bottom of the sea is beautiful.

你根本不明白

nǐ gēn běn bù míng bai

You don't understand at all

这是一根竹子。

zhè shì yī gēn zhú zi。

This is a bamboo.

这根线太长了。

zhè gēn xiàn tài cháng le。

This line is too long.

我有一根魔杖

wǒ yǒu yī gēn mó zhàng

I have a magic wand.

你根本就不诚心

nǐ gēn běn jiù bù chéng xīn

You are not sincere at all

这本书在树的底下

zhè běn shū zài shù de dǐ xia

This book is under the tree