B1 Grammar lessons cover the rules, patterns, and structures you need at the B1 Intermediate level. Each lesson explains a grammar point with clear examples, common mistakes to avoid, and practice opportunities. Topics are ordered to build on each other so you can work through them step by step.
The English language is full of nuances, especially when it comes to the plural forms of nouns. A case in point is the term “memorandum,” which originates from Latin and is used to denote a note or document serving as a reminder or a form of communication. As with many words borrowed from Latin, the…
The word “index” has more than one acceptable plural form, yielding to two main variants: “indexes” and “indices.” The selection between these forms often hinges on context and tradition. “Indexes” is commonly used in reference to alphabetical lists in books and databases, while “indices” is preferred in mathematical and technical contexts to describe multiple sets…
In the most straightforward terms, the plural of “hypothesis” is “hypotheses.” This transformation follows a specific pattern seen in words that end in “-is,” with the “-is” changing to “-es” to form the plural. Understanding the correct use of the singular and plural forms is fundamental for both written and spoken English, especially within academic…
The word “curriculum” is frequently used in the context of education, referring to the set of courses or content offered by an educational institution. However, when it comes to discussing more than one curriculum, many find themselves uncertain of the correct plural form. This is a common point of confusion, as several words that hail…
The plural of “crisis” is “crises,” pronounced as ‘KRY-seez’. This follows a pattern found in words of similar origin, where the ‘is’ ending is replaced with ‘es’ to form the plural. Knowing the correct plural form is crucial when discussing multiple situations that can be characterized as crises, such as economic downturns, political upheavals, or…
The English language is full of nuances that can sometimes stump even the most proficient speakers. One such example is the word “bureau,” which carries different meanings and has origins that trace back to French. In its singular form, “bureau” can refer to an agency or organization, as well as a piece of furniture. But…
When discussing the English language, particularly its rules of grammar and pluralization, one may encounter a point of confusion with certain words with Latin origins. The term “cactus,” which refers to a family of spiny plants native to arid environments, presents such a case. Common practice in American English allows for variability in expressing the…
When studying biological classification, the concept of genus becomes pivotal. It represents a principle category in the taxonomy of organisms, ranking above species and below family. This classification is used to group species that share common characteristics and is rooted deeply in the science of taxonomy. The singular form of this term is ‘genus,’ but…
The principal plural form of “fungus” is “fungi,” which adheres to the classic Latin origin of the word. However, one may also encounter “funguses” as a valid yet less common alternative that follows regular English pluralization rules. The usage of either term can depend on the context or preference, but “fungi” is predominantly used in…
The plural of “formula” is a subject of interest both for those studying the English language and for professionals in fields where precise terminology is crucial. Whether it’s within the realms of mathematics, chemistry, or even baby nutrition, understanding how to correctly pluralize this word can aid in clear communication. In English, words borrowed from…
