Incorrect: It is raining for two days.
    Correct: It has been raining for two days.
    Incorrect: The baby is sleeping for three hours now.
    Correct: The baby has been sleeping for three hours now.

Here the error lies in using the present continuous instead of the present perfect continuous. We use the present perfect continuous tense to talk about an action which started in the past, has gone on till the present and is still continuing....

Learn how to collect information from books and other sources by taking notes. Students will learn organizational techniques that act as foundational skills for all present and future areas of study.

Этот тренажер призван помочь ребенку научиться правильно использовать Настоящее простое время. Тренажер разработан в соответствии со школьной программой и опирается на простейшую лексику, знакомую младшеклассникам. В нем дается множество однотипных упражнений на отработку различных случаев употребления времени Present Simple.

Encyclopedia of World Trade: From Ancient Times to the Present (4 Volumes Set)

Written for high school or beginning undergraduate students, this four-volume reference valiantly attempts to provide a historical framework for the perhaps overly broad concept of world trade. Entry topics were selected on trade organizations, influential people, commodities, events that affected trade, trade routes, navigation, religion, communication etc.

Ladders and Snakes Game- Present simple and Present continuous

Board game to practice Presente simple and continous

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