Учеба и наука

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помогите найти глаголы сказуемые и определить временную форму - вопрос №2357005

Agronomy is the science of the production of farm crops. We do not know much of the origin of farm crop production. Roman agriculture was the first of which we got some information from written documents. Primitive man did not grow plants. He lived on leaves, roots, seeds, berries, and fruits. Crop production began when man started to cultivate plants.

The early farmer cultivated a limited number of crops, but he grew some grain crops which the farmer grows at present. All important farm crops originated from wild species.

Science helped, helps and will help to increase yields of crops.Findings in field and laboratory research are leading to new recommendations. The farmer who follows the most efficient practices will get higher yields. The plant grower who 11 still farms as his father did when he was a boy is the farmer who does not and will not get high yields of crops.

март 5, 2017 г.

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Всего ответов: 1

Vladimir

22-й в Учебе и науке

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Primitive man did not grow plants.
did not grow-Past Simple

He lived on leaves, roots, seeds, berries, and fruits.
lived-Past Simple

Crop production began when man started to cultivate plants.
began-Past Simple
started to cultivate-Past Simple+Infinitive

The early farmer cultivated a limited number of crops, but he grew some grain crops which the farmer grows at present.
cultivated-Past Simple
grew-Past Simple
grows-Present Simple

All important farm crops originated from wild species.
originated-Past Simple

Science helped, helps and will help to increase yields of crops.
helped-Past Simple
helps-Present Simple
will help to increase-Future Simple+ Infinitive

Findings in field and laboratory research are leading to new recommendations.
are leading- Present Continuous

The farmer who follows the most efficient practices will get higher yields.
follows-Present Simple
will get-Future Simple

The plant grower who 11 still farms as his father did when he was a boy is the farmer who does not and will not get high yields of crops.
did-Past Simple
was-Past Simple
is-Present Simple
does not (get)-Present Simple
will not get-Future Simple