Unit 3 What were you doing when the UFO arrived?
step①: lead the students to read the sentences in activity 2a to make sure the students are familiar with the listening materials.
step②: ask the students to listen to the tape and number the statements in the order they hear them.
step③: check the students’ answers with the following words:
first,…landed on…
next,…got out of…
then,…went into…
and then,…bought…
finally,…visited…
step④: ask the students to practice retelling the short story with the help of the words.
在這一任務的設計中，考慮到聽力任務的難度不大，于是在聽力結束之后又提高了任務難度，即根據聽力信息來復述這則小故事，為第二課時中3a的學習奠定了基礎。
task 5: find the differences between “when” and “while” by listening and doing the exercises.
aims: try to make the students learn the grammar by doing themselves.
step①: ask the students to complete the sentences with “when” and “while” in activity 2b themselves before listening.
step②: ask the students to listen to the tape and check their answers.
step③: ask the students to read the sentences carefully and try to find the differences between “when” and “while”.
step④: make some of the students show their views about the grammar, and show the detailed explanation:
when i got to the classroom, mr. li was talking to my classmates this morning.
在表示過去的時間狀語中,when后跟一般過去時。
while tom was doing his homework, his father was cooking.
在表示過去的時間狀語中,when后跟一般過去時。
在本環節中，并沒有直接將語法項目呈現給學生，而是讓學生通過自主探究，learning by doing,歸納出知識點，教師再做適當的點撥。這樣的處理方式，會使學生對所學知識理解的更深刻，記憶的更牢固。