He studies hard because he wants to get good marks -> He..... ->He..... Dùng in order to/ so as to/so that+clause

`->` $\text{He studies hard so as to get good grades.}$

$\text{S + V(s/es) + In order / So as + (not) to + V-inf.}$

`->` $\text{He studies hard in order to get good grades.}$

S + V(s/es) + In order / So as + (not) to + V-inf.

$\text{S + V(s/es) + In order / So as + (not) to + V-inf.}$

`->` $\text{He studies hard so that he could get good grades.}$

$\text{S + V(s/es) + so that + S + modal verb + V-inf.}$

$#Angelic$