This page delves deeper into time clauses and introduces the passive voice construction. Various temporal markers are explained in detail, including 'before/after', 'as soon as', and 'until'.

Definition: 'As soon as' indicates immediate sequence of actions, while 'until' expresses duration up to a specific point.

Example: "I will call you as soon as I finish work" shows the immediate future relationship between actions.

Highlight: The passive voice construction begins with basic tenses, showing how subjects and objects switch positions.

Vocabulary: Past participle - the form of a verb used in perfect tenses and passive constructions.

This page focuses on advanced passive voice constructions across various tenses and aspects. It covers present perfect, past perfect, and future perfect passive forms.

Definition: Present perfect passive combines 'has/have been' with the past participle to show completed actions with present relevance.

Example: "The book has been read by me" demonstrates the present perfect passive structure.

Highlight: Modal verbs in passive constructions add layers of meaning regarding possibility, obligation, and necessity.

Vocabulary: Modal verbs - auxiliary verbs that express necessity, possibility, permission, or obligation.

This page concludes with modal perfect passive constructions and special passive forms with 'have to' and 'be going to'.

Definition: Modal perfect passive constructions express past possibility, obligation, or necessity in passive form.

Example: "The package must have been delivered by now" shows deduction about past events in passive form.

Highlight: 'Have to' and 'be going to' can be transformed into passive voice while maintaining their core meanings.

Vocabulary: Modal perfect - a construction combining modal verbs with perfect aspect to express past possibility or necessity.

This page introduces the fundamental concepts of conditional statements and time clauses in English. The four types of conditionals are thoroughly explained with their specific structures and uses.

Definition: Zero conditional expresses universal truths or habitual actions using present simple in both clauses.

Example: "If you heat ice, it melts" demonstrates the zero conditional structure.

Highlight: The first conditional uses present simple in the if-clause and will + base form in the main clause to discuss probable future situations.

Vocabulary: Past perfect tense - a form used to describe an action completed before another past action.

The time clauses section introduces essential temporal conjunctions like 'when' and 'while', explaining their specific uses in constructing time-related sentences.