5 . 想一想
1. I was having a walk when I met an old friend yesterday.（用while改写为同义句）
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2. 英语中用哪个形容词来形容风势大？
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3. wood作“木头”讲是可数还是不可数？“三块木头”应该怎样表达？
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6 . 选一选

match; wood; against; window; light

1. There are two doors and six ________ in my classroom.
2. The desk and the chair are made of ________.
3. There are some ________ in the small box.
4. Look! An old woman is sitting there ________ a tree.
5. We all know that the ________ goes much faster than the sound.