Какие слова надо подчеркнуть ? перепишите следующие предложения, найдите и подчеркните в них причастие, герундий или инфинитив, определите их функцию в предложении, переведите предложения на язык. dams are barriers built across rivers and streams to control the flow of water, increasing the area under irrigation is a general tendency. to have more food people will cultivate new lands. soil conservation means proper land uses protecting the land against all the forms of soil deterioration. in order to use machines and labour effectively and more economically in preparing the soil for planting, many farmers use minimum tillage. crop yields can be increased by improving the farm land.
To have - обстоятельство,
protecting - причастие,
to use - обстоятельство,
improving - причастие.