I was astonished at his behaviour.

April 15, 2024 by rawan239

of the sentence. Option A, “His behaviour is astonishing to me,” is in the present tense. Option C, “His behaviour astonished me,” is also in the simple past tense, but it does not agree with the subject of the sentence. The subject of the sentence is “I,” which is in the first person singular. The verb “astonished” should also be in the first person singular, which is “astonished me.” Option D, “His behaviour had astonished me,” is in the past perfect tense. The past perfect tense is used to describe events that happened before another event in the past. In this sentence, there is no other event in the past that the speaker is describing. Therefore, the past perfect tense is not necessary.