English Grammar Essentials is one of the core study topics in our English catalog. This page gathers the essentials: what the topic covers, the key concepts and
terminology, worked examples and exam-style questions — everything also available as 222 companion flashcards for spaced-repetition practice.
Main questions this page answers:
- What is the simple past tense of the verb 'to go'?
- How do you form the present perfect continuous tense?
- When should I use 'a' versus 'an' before a noun?
- What is the zero conditional used for?
- How is the third conditional structured?
- What does the modal 'could' express?
- How do you change a sentence from active to passive voice?
- What is backshifting in reported speech?
What is the simple past tense of the verb 'to go'?
The simple past tense of 'to go' is 'went' (for all subjects: I went, you went, he/she/it went, we went, they went). The past participle is 'gone'.
Identify the error: 'Me and him went to the store.'
The error is using objective pronouns as subjects. Correct: 'He and I went to the store.' When in doubt: remove the other subject and test ('Me went' is wrong; 'I went' is correct).
How do you form the past continuous tense?
The past continuous is formed with subject + 'was/were' + the present participle (-ing form). It describes an ongoing action in the past. Example: 'I was reading when she called.'
What is the passive form of: 'She is writing a letter'?
Passive form: 'A letter is being written by her.' Structure: Object + is/are + being + past participle. This uses the present continuous passive because the active verb is in the present continuous tense.
Define the phrasal verb 'look up to' and give an example sentence.
'Look up to' means to admire or respect someone. Example: 'Many young athletes look up to Serena Williams as a role model.' It is a transitive phrasal verb that requires an object.
Define the phrasal verb 'figure out' and give an example.
'Figure out' means to understand or solve something after thinking. Example: 'I finally figured out how to solve the puzzle.' It is a transitive phrasal verb requiring an object (pronoun between: 'figure it out').
What is the future perfect continuous tense?
It describes an action that will continue up until a point in the future. Form: will have been + verb-ing. Example: 'By next July, I will have been working here for ten years.'
When is the present simple tense used?
It is used for habits and routines (e.g., 'I drink coffee every morning'), general truths and facts (e.g., 'Water boils at 100 degrees'), and permanent situations or states.
What is the structure of the first conditional sentence?
The first conditional uses 'if' + present simple in the condition clause, and 'will' + base verb in the result clause (e.g., 'If it rains, I will stay home'). It refers to a real and possible future situation.
What is the difference between 'so' and 'such' for emphasis?
Use 'so' before an adjective or adverb without a noun ('It was so cold'). Use 'such' before a noun phrase, typically with an adjective ('It was such a cold day'). Structure: so + adjective; such + (adjective) + noun. Example: 'She is so kind' vs. 'She is such a kind person.'