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2 了解震惊世界的9.11恐怖袭击事件
I. Grammar
What were you doing at eight last night? I was taking a shower.
What was she doing at the time of the rainstorm? She was doing her homework.
What was he doing when the rainstorm came? He was reading in the library when the rainstorm came.
What was he doing when the rainstorm came? He was helping his mom make dinner when it began to rain.
II. 4a To give Ss practice in using while and when.
III. 4b To give Ss practice in using the target language.
IV. 4c To give Ss practice in asking and answering questions using the target language.