Unit 8 I’ll help clean up the city parks．

ask one student to try to explain it. then tell them the meaning of it. volunteer means a person who offers to do something unpleasant or dangerous. it means a person who offers to help the others sometimes. volunteer is used as a verb in this lesson.
draw the students’ attention to the three posters on the board.
we can see one sentence in each poster.
and we can see some people in each poster, too. what are the volunteers doing in each poster? please work in pairs and talk about the posters.
give the students a few minutes to talk about what they will say. let them talk about all the three items. move around and help the pairs as needed.
then read the sentences in the posters to the class. ask the pairs of students to explain what the sentence means in their own words. or tell what the volunteers are doing in the posters.
for example, for the first poster, a pair might say:
it means there is trash in the park. there are papers on the ground. we can help clean up the park by picking up papers and trash. we can make the park clean.
after the students have finished all the items, ask the students to add some other ways they can help people. get them to write the ways down in the box below the picture.
at last, ask some students to share their ideas with the class. write any new words or phrases on the board and explain these words to the class, if necessary.
step ⅲ 1b
call the students’ attention to the two lists in the box in activity lb. ask some students to read the eight sentences on the lists to the class. explain any new words and phrases in it.
make sure that all the students can understand the meanings of the eight items.
then get the children to read the instructions together.
say, we will hear four conversations.
your task is to match the items in the two lists. we can see the blanks in front of the first line of each conversation. listen to the conversations and write the letter in front of the first line of each conversation. put the letters of the second line of conversations in right places.
point out the sample answer to the class.
play the recording the first time. tell the students to only listen.
then play the recording a second time.
tell them to write a letter in front of each numbered sentence this time.
check the answers.
step ⅳ 1c
read the instructions with the class.
call their attention to the example in the speech bubbles in activity la. ask a pair of students to read this conversation to a class. then let them practice in pairs.