Transform these sentences into the indicated tenses and grammatical structures: 1) Past Perfect Continuous; 2) Replace 'too...to'.

A.5 Language Study.

1. Mrs. Adis was sitting in the old basket armchair by the fire. (Choose the correct transformation of this sentence into past perfect continuous tense)

The original sentence is in the Past Continuous tense. To transform it into the Past Perfect Continuous tense, we use the structure "had been + verb-ing".

• i) Mrs. Adis sat in the old basket armchair by the fire. (Simple Past)
• ii) Mrs. Adis is sitting in the old basket armchair by the fire. (Present Continuous)
• iii) Mrs. Adis has been sitting in the old basket armchair by the fire. (Present Perfect Continuous)
• iv) Mrs. Adis had been sitting in the old basket armchair by the fire. (Past Perfect Continuous)

The correct alternative is iv).

iv) Mrs. Adis had been sitting in the old basket armchair by the fire.

2. It was too dark to see who it was. (Choose the alternative showing the correct replacement of 'too-----to')

The structure "too...to" expresses a negative result. It can be replaced by "so...that...not".

• i) It was so dark that they could see who it was. (Incorrect, changes meaning)
• ii) It was so dark that they could not see who it was not. (Incorrect, grammatically awkward)
• iii) It was so dark that they could not see who it was. (Correct, maintains meaning)
• iv) It was so dark that they could to see who it was. (Incorrect, grammatical error)

The correct alternative is iii).

iii) It was so dark that they could not see who it was.