1 My brother has fewer friends than my sister .
$\text{⇒ My sister has more friends than my brother.}$
2 My father spends more time going to work than my mother.
$\text{⇒ My mother spends less time going to work than my father.}$
3 My brother bought more food than Linh has mother.
$\text{⇒ Linh has mother bought less food than my brother.}$
4 My house has less furniture than Huong has house.
$\text{⇒ Huong has house has more furniture than my house.}$
5 My uncle has more children than my aunt
$\text{⇒ My aunt has less children than my uncle.}$
6 I spend more time doing homework than my younger sister does
$\text{⇒ My younger sister spends less time doing homework than I do.}$
7 Does an apple contain less sugar than a banana ?
$\text{⇒ Does a banana contain more sugar than an apple?}$