Completing Sentences with Conditional Clauses

The question asks us to complete a sentence starting with "If it stopped raining..." by choosing the correct alternative from the given options. This structure is a conditional sentence, specifically dealing with hypothetical situations.

Understanding Type 2 Conditional Sentences

Conditional sentences often describe a condition and the result of that condition. The sentence fragment "If it stopped raining..." uses the past simple tense ("stopped") in the 'if' clause. This structure is characteristic of a Type 2 conditional sentence.

A Type 2 conditional sentence is used to talk about:

• Hypothetical or unreal situations in the present or future.
• Situations that are unlikely to happen.

The typical structure of a Type 2 conditional sentence is:

If + past simple, would/could/might + base form of the verb

In our sentence, the condition is "if it stopped raining". This describes a hypothetical event (it is currently raining, and we are considering the possibility of it stopping). The main clause should then express the result using 'would', 'could', or 'might' followed by the base form of a verb.

Analyzing the Options

Let's look at each option and see which one fits the Type 2 conditional structure and meaning:

1. we had gone out.

   This option uses the past perfect tense ("had gone"). This structure is typically used in a Type 3 conditional sentence (If + past perfect, would have/could have/might have + past participle), which talks about hypothetical situations in the past. It does not fit the Type 2 structure initiated by the past simple "stopped".

2. we could go out.

   This option uses "could" followed by the base form of the verb "go" ("go out"). "Could" is one of the modal verbs (along with 'would' and 'might') used in the main clause of a Type 2 conditional to express possibility or ability. This perfectly matches the structure: "If it stopped raining (past simple), we could go out (could + base verb)". This sentence expresses a hypothetical possibility in the present or future: if the rain stops (which is not happening now, or might not happen), we would then have the ability or opportunity to go out.

3. we should go out.

   This option uses "should" followed by the base form of the verb "go" ("go out"). "Should" typically expresses advice, recommendation, or obligation. While grammatically possible in some contexts, it doesn't fit the standard structure and meaning of expressing a hypothetical outcome or possibility in a Type 2 conditional as well as 'could', 'would', or 'might' do.

4. we ought to go out.

   This option uses "ought to" followed by the base form of the verb "go" ("go out"). "Ought to" is similar in meaning to "should," expressing advice or obligation. Like "should," it doesn't typically fit the main clause of a standard Type 2 conditional expressing a hypothetical result or possibility.

Based on the structure of Type 2 conditional sentences ("If + past simple, would/could/might + base verb"), option 2 is the correct way to complete the sentence, expressing a hypothetical possibility.

The complete sentence is: If it stopped raining, we could go out.

Revision Table: Conditional Sentences Overview

Understanding the different types of conditional sentences is key to correctly completing such sentences. The table above summarizes the main types.

Additional Information on Modal Verbs in Conditionals

In Type 2 conditional sentences, 'would', 'could', and 'might' are the primary modal verbs used in the main clause:

• Would: Expresses the certain result of the hypothetical condition. Example: If I won the lottery, I would buy a house.
• Could: Expresses a possible result or ability arising from the hypothetical condition. Example: If I had more time, I could learn a new language. (Ability) / If it stopped raining, we could go out. (Possibility/Ability)
• Might: Expresses a less certain or more hesitant possibility. Example: If she studied harder, she might pass the exam.

The choice between 'would', 'could', and 'might' depends on whether you want to express certainty, possibility/ability, or less certainty about the outcome of the hypothetical situation.