Question 17: Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions. Question 29. Basing on the clues found, the police managed to apprehend the suspect a few days after the murder.
Knowledge of propositional reduction
Based on the clues found, the police managed to apprehend the suspect a few days after the murder.
*When two clauses have the same subject, we can reduce the clause by omitting the subject of the first clause and replacing the verb in the following two ways:
S1 + V1 + ….., S1 + V2 +…….
+ If V1 is active: V1_ing +……., S1 + V2 +…….
+ If V1 is in the passive voice: V1_ed +…………, S1 + V2 +…….
+ If V1 is the verb “tobe”, or the first part has the form: “S1 + tobe + adj + N…”, then we remove the subject and verb “tobe”, keeping the adjective: Adj + N… ., S1 + V2 +…..
*We have structures with “base”:
+ Base sth on sth (phr.v): based on something
+ Be based on sth (adj): based on something
Considering the sentence structure, because “base” and the preposition “on” go side by side without an object in the middle, “base” here cannot be a verb to shorten according to the structure if V1 is in the active form. as above; Therefore, here it is necessary to use “based” as an adjective.
=> Answer A (based on -> based on)
Structure to note:
Manage to do sth: try, manage to do
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