Understanding Sentence Correction for Identifying Features

The question asks us to identify the most appropriate option to replace the underlined phrase "can be recognise from its" in the sentence: "The shoebill stork can be recognise from its long legs and broad wings." We need to find the phrase that corrects any grammatical errors and fits the meaning of the sentence.

Analyzing the Original Sentence and Underlined Segment

Let's break down the underlined segment "can be recognise from its":

• "can be recognise": This part uses the modal verb "can" followed by "be" and the base form of the verb "recognise". This structure is used for the passive voice, but the verb following "be" in the passive voice must be the past participle (V3) form. The past participle of "recognise" is "recognised".
• "from its": This part includes the preposition "from" and the possessive pronoun "its". The possessive pronoun "its" is correctly used here to show that the long legs and broad wings belong to the shoebill stork. However, the preposition "from" might not be the most appropriate choice to indicate the means by which something is recognised. The preposition "by" is typically used to show the agent or the means in a passive construction (e.g., recognised by its features).

So, the original segment has two main issues: the incorrect verb form ("recognise" instead of "recognised") and potentially the incorrect preposition ("from" instead of "by").

Evaluating the Options for Substitution

Let's look at the given options:

1. recognise through it's

   • "recognise": Still the incorrect base form of the verb.
   • "through": This preposition could potentially work in some contexts, but "by" is more common for identification based on features.
   • "it's": This is a contraction for "it is" or "it has". It is incorrect here as we need a possessive pronoun ("its") to show possession of the legs and wings.

2. recognising from it's

   • "recognising": This is the present participle (V-ing) form. While "be" followed by V-ing forms the present continuous tense, the structure "can be recognising" is not the correct passive voice construction needed here.
   • "from": May not be the most appropriate preposition.
   • "it's": Incorrect contraction instead of the possessive pronoun "its".

3. recognised by its

   • "recognised": This is the correct past participle (V3) form needed after "can be" for the passive voice.
   • "by": This is the appropriate preposition to indicate the means of recognition (by its features).
   • "its": This is the correct possessive pronoun.

4. No substitution

   • As analysed, the original sentence has grammatical errors. Therefore, a substitution is required.

Comparing Options and Identifying the Correct Substitution

Option 3, "recognised by its", correctly addresses all the grammatical issues in the original sentence:

• It uses the correct passive voice structure "can be recognised".
• It uses the appropriate preposition "by" to indicate how the stork is recognised.
• It uses the correct possessive pronoun "its".

Let's summarize the analysis in a table:

Based on this analysis, Option 3 is the only grammatically correct and appropriate substitution.

The Corrected Sentence

Substituting "recognised by its" into the original sentence gives us: "The shoebill stork can be recognised by its long legs and broad wings." This sentence is grammatically correct and clearly conveys how the shoebill stork is identified.

Revision Table: Key Grammar Concepts

Additional Information on Sentence Structure and Usage

Understanding the difference between active and passive voice is crucial for sentence correction tasks. The active voice emphasizes the doer of the action (e.g., "You can recognise the shoebill stork..."). The passive voice emphasizes the action itself or the recipient of the action (e.g., "The shoebill stork can be recognised..."). In this sentence, the focus is on how the stork is identified, making the passive voice appropriate.

Choosing the correct preposition is also vital for clear communication. Prepositions like 'by', 'from', 'through', 'with', etc., connect words and phrases and show relationships (like means, agent, origin, etc.). In the context of identification based on characteristics, 'by' is the standard and most natural choice in English.