Identify the type of adverb in the following sentence:Thereafter, he looked both ways when crossing the road.

Step 1: Break Down the Problem

To identify the type of adverb in the given sentence, we need to analyze the adverb "thereafter" in its context and understand its function in the sentence.

Step 2: Relevant Concepts

Adverbs can be classified into several categories based on their functions:

1. Adverb of time: Indicates when an action happens.
2. Adverb of manner: Describes how an action is performed.
3. Adverb of place: Indicates where an action happens.
4. Adverb of frequency: Describes how often an action occurs.
5. Adverb of degree: Indicates the intensity or degree of a verb, an adjective, or another adverb.

Step 3: Analysis and Detail

In the sentence "Thereafter, he looked both ways when crossing the road," the word "thereafter" is used to indicate a specific point in time that follows another event. It suggests that the action of looking both ways happened after some other event (presumably mentioned earlier).

Step 4: Verify and Summarize

Since "thereafter" is specifying when the action of looking both ways occurs, we can confirm that it clearly qualifies as an adverb of time.

Final Answer

The type of adverb in the sentence is an adverb of time.