9. Read not before you learn to spell.
读书应该循序渐进。
还能这样说：
You should be patient when you read a fat book.
Reading should be gradual.
谚语：
Pride comes before a fall.
骄必败。
10. We should form a good habit of reading.
我们应该养成读书的好习惯。
还能这样说：
We should have a good habit of frequent reading.
We should develop a good habit of reading books.
应用解析：
be in the habit of 习惯于;
break off the habit of 改掉……的习惯;
habit of mind 习性，心情;
out of habit 出于习惯;
get sb. into the habit of 使某人染上……嗜好
11. Parents always encourage their children to read more books.
父母总是鼓励孩子多读书。
还能这样说：
Children are always encouraged by their parents to read more.
Parents hope that their children can do more reading.
应用解析：
encourage sb. in sth. 鼓励或支持某人;
encourage sb. to do sth. 鼓励某人做某事;
encourage competition 鼓励竞争
12. We can derive benefits from books.
我们可以从书中获益。
还能这样说：
Books can't help us a lot.
Books are beneficial to us.
应用解析：
derive sth. from sth. 得到，获取;
derive from sth. 源自，源于