he's been collecting matches since he was ten years old.为什么是He’s been 、、、?这是什么意思呀?不是应该是 has been 吗?
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![he's been collecting matches since he was ten years old.为什么是He’s been 、、、?这是什么意思呀?不是应该是 has been 吗?](/uploads/image/z/12740009-41-9.jpg?t=he%27s+been+collecting+matches+since+he+was+ten+years+old.%E4%B8%BA%E4%BB%80%E4%B9%88%E6%98%AFHe%E2%80%99s+been+%E3%80%81%E3%80%81%E3%80%81%3F%E8%BF%99%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D%E5%91%80%3F%E4%B8%8D%E6%98%AF%E5%BA%94%E8%AF%A5%E6%98%AF+has+been+%E5%90%97%3F)
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