To achieve good language learning results,students need to l

To achieve good language learning results,students need to learn the English text books well.
(1) For the sake of obtaining good language learning result /effect,Students are supposed to learn English text books well
(2) In order to acquire language learning results,students should thoroughly digest and assimilate the contents of the English text books .
(3)Students are suggested to master the contents of the English text books so as to obtain excellent language learning results .

As a student he should learn the English text book well so as to achieve good results in English study
道理很简单，你说你要写篇作文就是了，那就可展开了。

the English text book is the most important tool in language learning