Unit12 Don’t eat in class
we have to clean the classroom after school.
②當have to 用于否定句或疑問句中時，要根據時態加助動詞。
we don’t have to finish our homework at school.
does she have to go to school tomorrow? yes, she does.
⑵must 與have to 都有必須的意思，但must 強調主觀看法，have to 比較強調客觀需要，must 則不能。
i have to go home early this afternoon.
we must clean our classroom every day.
section b
step 1 greetings
step 2 some new words about this part.
step 3
(1a)introduces the key vocabulary.
write the letter of each picture on the blank line in front of the rules. point out the sample answer. then check the answers.
(2a)this activity provides listening and reading practice using the target language.
(2b)listening and writing.
play the recording the first time, then , play it again, this time, have students make check-marks. you may wish to play the tape more than once at this point.
(2c)oral practice.
ask students to work in small groups.
(3a)reading.
read the letter to the class or ask a student to do this. have students read the letter and write the numbers 1 through 8 in front of the sentences that talk about rules. then ask students to write the rules on the blank lines next to the letter.
(3b)this activity provides guided writing practice using the target language.
the students do the activity individually. as they work, move around the classroom monitoring progress and offer help as necessary. at last, check the answers.
(3c)this activity provides personalized writing practice using the target language.
ask several students to read their letters to the class.
(4) listening, speaking, reading and writing practice using the target language.
ask students to make a list of the rules in their houses. then, have some students read their lists to the class. ask students to move around the room and ask each other questions. their job is to find other students who have the same rules.
language points:
9.practice your guitar every day.
①本句是一個祈使句，祈使句通常以動詞原形開頭， 用來表示命令，請求或勸告的句子。
do your homework after school.
come to school earlier next time.
close the window, please.
祈使句的否定句在句首加don’t 或do not.
don’t wear hats in class.
don’t be late for school again.
don’t watch tv in the evening.
以let us 或 let’s 開頭的祈使句表示建議做某事。
let’s go to the mountains.
let us help you.
有時為了強調，在肯定結構前加do.
do come on time tomorrow.
②practice 的用法， practice 在美式英語中既可作動詞，又可作名詞， practice 在英式英語中是名詞，動詞是practise.