Correct

虎头蛇尾

/ hǔ tóu shé wěi /
Strokes

Definition

lit. tiger's head, snake's tail (idiom); fig. a strong start but weak finish

Example

Definition

a tiger's head and a snake's tail―in like a lion, out like a lamb; fine start and poor finish

1
duō
许多
rén
xué
yīng
英语
dōu
shì
tóushéwěi
虎头蛇尾
  
,
似乎
hěn
rènzhēn
认真
kāishǐ
开始
  
,
jiānchí
坚持
le
tiān
  

When they started learning English, it looked as if they really meant business; but their efforts soon petered out.