a) A sentence is made interrogative by introducing it with the interrogative particle https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315620091/1e85dcd9-67fa-4282-a164-2a1659972fa7/content/inline1452.tif"/> hal ..?, by prefixing the first word of the sentence with the interrogative particle https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315620091/1e85dcd9-67fa-4282-a164-2a1659972fa7/content/inline1453.tif"/> ᵓa..? https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315620091/1e85dcd9-67fa-4282-a164-2a1659972fa7/content/fig24_265.tif"/>