1.We began to learn English three years ago.2.I have been to U.S.A. before.3.He hasn't come to school because he was ill. 4.He has learned English for 5 years. 1.写出同义句.2.改为否定句.3.就划线部分提问.4.就划线部分提问
问题描述：
1.We began to learn English three years ago.2.I have been to U.S.A. before.
3.He hasn't come to school because he was ill. 4.He has learned English for 5 years. 1.写出同义句.2.改为否定句.3.就划线部分提问.4.就划线部分提问
答
1 We have learned English since three years ago .
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We have learned English for three years.
2 I haven't been to U.S.A before.
3 Why hasn't he come to school
4 How long has he learned English .
加油!不明白再问!