... questions supplied on page 46 , Unit Four English 12 textbook . - To correct Ss’ pronunciation . - To show Ss to read all words supplied on page 46 , Unit Four , English 12 textbook . WHILE YOU LISTEN ... and answer the questions supplied on page 46 , Unit Four , English 12 textbook . - To read all words supplied on page 46 , Unit Four , English 12 textbook . Each word is read twice . - To listen ... words provided on page 47 , Unit Four , English 12 textbook. - To show Ss to practise reading the sentences provided from page 47 to page 48 , Unit Four , English 12 textbook. - To correct Ss’...