It is revised as: I saw colorful wild flowers blooming on the grass and heard birds singing happily.
explanation and analysis:
according to the original sentence "I see colorful wildflowers blooming on the grass and birds singing happily", we can find that the first half of this sentence uses the word "see" to see colorful wildflowers, but it cannot be used to "see" birds singing, so it is a lack of key words. Singing should be "hear" and should be modified to "I see".
Extended information:
This type belongs to ill-matched sentences, which are similar:
1. People's living standards are constantly improving. (If the subject and predicate are not properly matched, the word "improvement" should be changed to "improvement")
2. His revolutionary spirit always comes to my eyes. ("Spirit" and "Emergence" cannot form a subject-predicate relationship. You can change "spirit" to "image")
3. What a beautiful picture the rustling waves and the silvery sea make up. ("Waves" and "sea surface" are both subjects, in which "Waves" cannot form a subject-predicate relationship with the predicate "composition", so "rustling waves" should be removed or another subject-predicate relationship should be formed)
4. Rice production in this county generally grows well due to reasonable close planting and strengthened management. ("production" and "growing well" cannot form a subject-predicate relationship, so "production" should be deleted and "rice" should be used as the subject)