HSK 4 HSK V1
Correct

最好

/ zuì hǎo  / 
Strokes

Definition

最好 is an Adverb, which means [ best/(you) had better (do what we suggest) ].

Example

As an Adverb.
1
Wǒ
我
dānxīn
担心
huǒchēpiào
火车票
bùhǎo
不好
mǎi
买
  
,
nǐ
你
zuìhǎo
最好
tíqián
提前
zài
在
wǎngshàng
网上
mǎi
买
piào
票
  
。

I'm afraid train tickets are hard to buy, you'd better buy them online in advance.

2
Nǐ
你
zuìhǎo
最好
néng
能
zài
在
chūnjié
春节
qián
前
huídào
回到
běijīng
北京
  
,
zài
在
běijīng
北京
guò
过
chūnjié
春节
  
。

You'd better go back to Beijing before the Spring Festival and have a Spring Festival in Beijing.