1 . They need to paint these pieces of funiture .
--> These pieces of furniture need painting 
need + V-ing: cấu trúc này mang nghĩa bị động, có nghĩa là cái gì đó cần được làm
2. Have you gone to school late before ?
--> Is this the first time you have gone to school late ? 
Have/ Has + S + V(pp) +...+ before ? 
<=> Is this the first time + S + have/has + V(pp) ? 
3 . She went out for some fresh air . ( In order to )
=> She went out in order to get some fresh air 
in order to mang nghĩa là "để, để mà" : S + V + in order + (not) to V
4. my father doesn't type as fast as he used to ( Used to )
=> My father used to type fast 
used to (từng, đã từng): chỉ một thói quen, một hành động thường xuyên xảy ra trong quá khứ và bây giờ không còn nữa 
S + used to + V-inf 

1. These pieces of funiture need painting.

2. Is this the first time you have gone to school late?

3. She went out in order to breathe fresh air

4. My father used to type very fast