1.The boy is strong. He can carry that heavy suitcase.（合成一句）

1.The boy is strong. He can carry that heavy suitcase.（合成一句） The boy is strong.He can carry that heavy.(合成一句) The boy is The boy is so strong that he can carry the heavy box.同义句 同义句转换The boy is so young that he can't carry this heavy box. the boy is very strong , and he can carry the heavy box合并成一局 改写 The boy is wery strong and he can carry the heavy box. The boy is so strong.He can carry the heavy box.（合并成一个句子） Th He is very strong.He can carry that heavy box easily.同义句转换 He is very strong.He can carry that heavy box easily.改为同义句 He is so strong that he can carry the heavy box变同义 The young man is so strong that he can carry the heavy box.( He is so weak that he can't carry the heavy box（改为简单句）