The most immediate reason for the crisis is scorching heat. The past couple of months have been even hotter than usual in South Asia. In north-west and central India average temperatures in March and April were the highest since records began 122 years ago. As a result， air-conditioners in homes and offices have been whirring away at levels not usually seen until mid-May. That has come on top of already rising demand after the easing of covid-19 restrictions and an uptick in economic activity.

發音錯誤：scorching heat

have been whirring away

already rising demand

covid-19 restrictions

have been even hotter

In north-west and central India average temperatures in March and April were the highest since records began 122 years ago.

在印度西北部和中部，3月和4月的平均溫度是過去122年有記錄以來最高的。

主干：average temperatures were the highest.

地點狀語：In north-west and central India

后置定語： in March and April是介詞短語做后置定語，修飾average temperatures，不要誤認為是時間狀語。

時間狀語從句：since records began 122 years ago是since引導的時間狀語從句。