2. "Spring rain is colorless, because every time we see it, it has no color."
3. "Spring rain is pink, spring rain falls on peach trees, and peach blossoms are pink. I like it. "
4. "Spring rain is blue, because the sky is blue."
5. "Spring rain is colorful, because spring is colorful."
Imitation can consider its implicit requirements from the following aspects:
(1) See whether the example sentence is a single sentence or a complex sentence, a declarative sentence or a interrogative sentence, a whole sentence or a scattered sentence, an affirmative sentence or a negative sentence, a long sentence or a short sentence;
(2) Look at the logical relationship between the structure of phrases in a single sentence and clauses in a complex sentence;
(3) Look at the style, color and emotional tone;
(4) Look at keywords and so on. We should attach great importance to the analysis of implicit demand.