答案是：
✘ I'm afraid of go shopping.
✓ I'm afraid of going shopping.

在afraid of後面應該跟名詞的，例如I'm afraid of spiders. 但如果是要跟一個動作，例如 go shopping，那該動詞需要加ing變成動名詞。像上面一樣：I'm afraid of going shopping.

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