题目内容
work tour visit speak hunt write piano science report play paint farm drive art act learn help kill dance win sing run follow hide share teach western provide
1. 直接加er或r构成的名词：
2. 直接加or构成的名词：
3. 直接加ist构成的名词：____________
4. 非直接加ist构成的名词：
5. 非直接加er构成的名词：
1. worker; speaker; hunter; writer; reporter; player; painter; farmer; driver; learner; helper; killer; dancer; singer; follower; hider; sharer; teacher; westerner; provider
2. visitor; actor
3. tourist; artist
4.scientist; pianist
5.winner; runner
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