从语法形式上来说，“读书”由read和book两个词组合的话，要形式上正确，只能写成下列形式之一：readabook，readthe book和readbooks，因为book为可数名词；没具体语境的话，从意思上来说，readabook是读一本书，readbooks是读多本书。
I realized something: I had read a book, and I had loved reading that book.
我意识到：我读过一本书,我喜欢读那本书。
When was the last time you read a book?
你上次看书是什么时候?
Hi, guys! Last week I read a book called Rabbits in Australia.
嗨,伙计们！上周我在澳大利亚读了一本叫《兔子》的书。
Why read a book when you can watch a movie or TV play on your smart phones or iPads?
既然可以在智能手机或iPad上看电影或电视剧，为什么还要看书呢?