Writing prompt: Using the given vocabulary and sentence patterns, and referring to the table, write a short essay.
Gao Feng is a football fan. He owns four footballs and many photos of soccer stars, but he never plays football; he only watches games on TV. He has two friends, Mike and Dave. Based on the table hints, introduce the hobbies of Gao Feng and his two friends in about 50 words.
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Student essay:
I am Gaofeng. I have two friends. They are Mike and Dave. Mike can play basketball. But he can't play ping-pong. Dave can play soccer. But he can't play baseball. I have four soccer. But I never play it. I think a good friend like

Corrected essay:
I am Gao Feng. I have two friends. They are Mike and Dave. Mike can play basketball, but he can't play ping-pong. Dave can play soccer, but he can't play baseball. I have four soccer balls, but I never play them. I think a good friend is like this.

Error analysis:
error_sentence: I am Gaofeng.
correct_sentence: I am Gao Feng.
error: Gaofeng
correction: Gao Feng
error_type: Space Error
error_severity: 2
error_description: Space Error: According to English writing conventions, when spelling Chinese names, the pinyin of the surname and the given name should be separated, and the first letter of each pinyin should be capitalized; the original sentence 〈Gaofeng〉 lacks a space, therefore 〈Gaofeng〉 is changed to 『Gao Feng』 to conform to English name writing conventions.
error_sentence: Mike can play basketball. But he can't play ping-pong.
correct_sentence: Mike can play basketball, but he can't play ping-pong.
error: . But
correction: , but
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar rules, two independent clauses should be connected by a comma, not a period; in the original sentence, 〈Mike can play basketball〉 and 〈But he can't play ping-pong〉 are two clauses, therefore 〈. But〉 is changed to 『, but』 to conform to grammar.
error_sentence: Dave can play soccer. But he can't play baseball.
correct_sentence: Dave can play soccer, but he can't play baseball.
error: . But
correction: , but
error_type: Punctuation Error
error_severity: 2
error_description: Punctuation Error: According to English grammar rules, two independent clauses should be connected by a comma, not a period; in the original sentence, 〈Dave can play socce〉 and 〈But he can't play baseball〉 are two clauses, therefore 〈. But〉 is changed to 『, but』 to conform to grammar.
error_sentence: I have four soccer. But I never play it.
correct_sentence: I have four soccer balls, but I never play them.
error: . But
correction: balls, but
error_type: Noun Number Error
error_severity: 4
error_description: ① Noun Number Error: According to the context, 〈soccer〉 in the original sentence refers to "the sport of soccer", but it should be in plural form and specified as 『soccer balls』 to denote the physical objects; therefore, 〈soccer〉 is changed to 『soccer balls』 to fit the context; ② Punctuation Error: According to English grammar rules, two independent clauses should be connected by a comma, not a period; in the original sentence, 〈I have four soccer〉 and 〈But I never play it〉 are two clauses, therefore 〈. But〉 is changed to 『, but』 to conform to grammar.
error_sentence: But I never play it.
correct_sentence: I have four soccer balls, but I never play them.
error: it
correction: them
error_type: Pronoun Error
error_severity: 2
error_description: Pronoun Error: According to English grammar rules, the objective pronoun for a plural noun should be 『them』; 〈four soccer balls〉 is a plural noun, therefore 〈it〉 needs to be changed to 『them』 to maintain number agreement.
error_sentence: I think a good friend like
correct_sentence: I think a good friend is like this.
error: like
correction: is like this.
error_type: Sentence Structure Error
error_severity: 5
error_description: ① Sentence Structure Error: According to English grammar rules, a sentence needs a predicate; the original sentence 〈I think a good friend like〉 lacks the predicate verb 『is』 to form a complete sentence, therefore 『is』 needs to be added before 〈like〉 to form a complete predicate structure; ② Pronoun Error: According to English grammar rules, a verb should be followed by an object; the verb 〈like〉 in the original sentence is missing a component after it, therefore 『this』 is added after 〈like〉 to conform to grammar rules.