Everything we can see is the past.
3. All destinations are in the past.
What you will never forget is the past.
5. All memories are the past.
6. All I think about is the past.
Imitation can consider its implicit requirements from the following aspects:
(1) See whether the example sentence is simple or complex, declarative or interrogative, whole or scattered, affirmative or negative, long or short.
(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.