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....

Formation of plurals - Grammar short lesson-

The plural noun is generally formed by adding -s to the singular.
Nouns ending in -s, -sh, -ch or -x form the plural by adding -es to the singular….
+ 25 more Grammar short lessons.

Adverbs of manner which answer the question ‘how?’ normally comes immediately after the verb or after the object if there is one…

Read the following sentence:

    John broke the window.
    The boy killed the spider.

In sentence 1, the noun John is the subject. It is the answer to the question ‘Who broke the window? ‘The group of words ‘broke the window’ is the  predicate. The predicate contains the verb broke.......

Some idioms have an international flavor; this infographic explains ten of them.