重点讲解：
1. no wonder
（表示找出某事的原因）难怪，怪不得；
eg. You are right, no wonder there are not too many orders this year.
你说的对，怪不得今年
eg. No wonder people were confused.
难怪人们会搞糊涂。
2. such as
（用于举例）例如，像，诸如；
eg. Children such as these make people cheerful.
像这样的孩子们会使人们欢喜。
eg. Many letters in the alphabet such as b, c, d, etc are consonants.
字母表中的许多字母像b，c，d，等等都是辅音字母。
3. put on
穿；戴；涂；抹；
eg. He got out of bed and put on some clothes.
他从床上起来，穿上几件衣服。
eg. He helped her to put on her coat.
他帮她穿上大衣。
