What attracts people to California is its pleasant climate and relaxed lifestyle. This is why each year a great number of people from all over the world try to immigrate to California . However, most applicants know that they have very little chance of getting a visa.

1.Study the underlined noun clauses in these sentences. In your opinion ,what roles do these clauses play in the sentences?

主语从句

表语从句

宾语从句