`1,` His class has 400 students

`2,` They ride their bike to school

`3,` She goes to school at half past seven

`4,` The cat is pretty

`5,` Pen has a sister who is Mary

`6,` How much is this ruler `?`

`7,` Let's read books `!`

`8,` The bookshop is behind the drugstore

`9,` Phong is the tallest person in this class

`10,` How many students are there in your school `?`

~~~~~

`-` by bike `:` bằng xe đạp `=` ride a bike 

`-` seven thirty `=` half past seven `:` bảy rưỡi

`-` What is the price `=` How much is `:` hỏi về giá tiền

`-` pretty (a) `=` beautiful (a) `:` đẹp

`-` `A` is in front of `B` `=` `B` is behind `A`

`-` who `+` clause ( mệnh đề quan hệ ) : bổ sung cho danh từ đi trước nó

`-` No one + ssanh hơn `A ` `~~` `A` `+` ssanh nhất

`-` Let's `+` V-inf `=` How about `+` V-ing

`-` How many `+` noun `:` hỏi về số lượng

$\begin{array}{c} \color{#db1616}{\texttt{#NUyen}} \end{array}$

`1`. His class has 400 students

`-` There are + N(số nhiều)

`-` HTĐ `(+)` S + V(s/es)

`2`. They are riding their bike to school

`-` HTTD `(+)` S + tobe + V-ing + O

`-` by + phương tiện 

`3`. She goes to work at half past seven

`-` half past seven `=` seven thirty : 7 giờ rưỡi

`4`. It is a beautiful cat

`-` S + am/is/are + adj 

`-` adj + N

`5`. Pen is Mary's brother

`-` Sở hữu cách : N's N

`6`. How much is this ruler? 

`-` How much + tobe + N?

`7`. Let's read books!

`-` What about + V-ing 

`-` Let's + V(bare) 

`8`. The bookshop is behind the drugstore

`-` behind >< in front of : phía sau >< phía trước

`9`. Phong is the tallest in this class

`-` So sánh nhất TTN : S + tobe + adj_est + O

`10`. How many students are there in your school?

`-` How many + N(số nhiều)