[观察例句]
1．What seemed strange before now appears quite normal to Xie Lei.
2．It's important that Xie Lei keeps a balance between her studies and her social life.
3．That is why today over 40% of Californians speak Spanish as a first or second language.
4．Her tutor explained that she was supposed to read lots of information to help form a wise opinion of her own.
5．He made it quite clear that he preferred to study English.
6．The fact that she seemed to develop normally was very encouraging.
