Some Chinese characters they look like very similar and it's hard to notice when you read them at first time.
玩"耍" ( Wánshuǎ )- Play around
想"要" ( Xiǎng yào )- Want to
一"本"書 (Yī běnshū)- A book ( In this case that is a measure of book)
很"大" ( Hěn dà )- Very big
"太"多 ( Tài duō )- Too much