重点讲解：
1. take advantage of 利用；
She took advantage of the children's absence to tidy their rooms.
她趁孩子们不在时收拾了他们的房间gJE#c@.EN135iS#Wq5Gc。
2. be able to do sth. 可以…的，能够…的；
You'll be able to read in peace.
你就能安心地读书了UKZ~)!;w1-NKywXgvh#v。
3. come in handy 派上用场；
That key will come in handy if you lock yourself out.
要是你把自己锁在了屋外，那把钥匙就派上用场了(N+SqkW&wQH;。
4. turn off 关上；关掉；截断，切断（…的供应）；
The light's a bit too harsh. You can turn it off.
灯光有点太刺眼了o*dmjdg*YPjB&O。你可以把灯关掉Q1+FO*d-8)!DGoB_N。