摘要： 单句语法填空用括号内单词的正确形式填空。
1．________(learn) more about Chinese culture, Jack has decided to take Chinese folk music as an elective course.
答案：To
用括号内单词的正确形式填空。
1．________(learn) more about Chinese culture, Jack has decided to take Chinese folk music as an elective course.
答案：To learn 考查不定式作目的状语。句意：为了更多地了解中国文化，杰克已决定选修中国民间音乐。
2．We think it quite important for us ________ (learn) a foreign language well.
答案：to learn 考查不定式作宾语。句意：我们认为学好一门外语很重要。it为形式宾语，不定式为真正宾语。
3．It's standard practice for a company like this one ________ (employ) a security officer.
答案：to employ 考查不定式作主语。句意：对于像这样的一家公司来说，雇用保安是一种惯例。it为形式主语，动词不定式作真正的主语。
4．One day a young man was walking along the road when he heard a cry. It seemed ________ (come) from underneath a bridge.
答案：to be coming 考查不定式作表语。句意：一天，一个年轻人正沿着道路行走，这时他听到了一阵哭声。那哭声似乎来自桥下。seem后应用不定式形式作表语，设空处表示正在进行，故用to be coming。
5．Let those in need ________ (understand) that we will go all out to help them.
答案：understand 考查不定式作宾语补足语。句意：让那些需要帮助的人们明白我们将全力以赴去帮助他们。此处为省略to的动词不定式作使役动词let的宾语补足语。
