B1 · Connectors · 10 minConnectors for contrast and reason — make sentence logic clear.
This B1 lesson shows you how to use although, however, because of, due to, so, and therefore in clear reports and emails — free to try, with no signup.
- CEFR levelB1 · Intermediate
- Time to completeAbout 10 minutes
- Core ideaLogic plus structure
- Blocks10 blocks
01 / 07
How do connectors of reason and contrast work?
Linking words connect statements by marking both their logical relationship and the grammar that follows. At B1, you can express contrast with although, though, even though, and however. Introduce a reason as a noun phrase with because of or due to, and introduce a result with so or therefore. The key question is therefore not simply which translation you remember. First decide whether you want to express contrast, reason, or consequence. Then check whether the next unit is a complete clause, a noun phrase, or a new sentence. In "Although the client cut the budget, we delivered," a subject and verb follow although. In "Because of the new workflow, we delivered," a noun phrase follows. "The client said no. However, we revised the offer" begins a new sentence. This double check — meaning and structure — makes your connections reliable.
02 / 07
What is the difference between although and however?
The difference between although and however is mainly one of sentence position and connection. Although introduces a complete clause with a subject and verb: "Although the client cut the budget, we delivered." That clause belongs inside the same sentence structure as the main statement. However, by contrast, can open a new sentence containing opposing information: "The client said no. However, we sent a revised offer." The full stop before However separates two complete sentences here, and a comma follows However. Do not write "The client said no, however we sent a revised offer," because one comma does not make this connection correctly. The minimal pair is useful: Although + clause, main clause versus Sentence. However, sentence. Both words mark contrast, but they build it differently. Decide whether you want to embed the contrast as a clause or add it as a new sentence.
03 / 07
How do although, though, and even though differ?
Although, though, and even though all introduce a contrast clause containing a subject and verb. The shared pattern is easy to see in "Although the budget shrank, we delivered on time": the budget is the subject and shrank is the verb. Though can express the same basic opposition. Even though highlights the unexpected contrast more strongly: the result feels particularly surprising despite the information in the clause. In your B1 sentences, their common structure matters just as much as the difference in strength. Do not place a lone noun phrase directly after them when you actually need because of or another prepositional connection. A clear short contrast construction is usually enough in reports. Choose although for a neutral contrast, though as a member of the same family, and even though when you want to make the tension stronger. A complete clause follows each form.
04 / 07
What is the difference between because of and due to?
Because of and due to both introduce a reason as a noun phrase in this lesson. In "We delivered on time because of the new workflow," the noun phrase the new workflow follows because of. In the same way, due to can precede a noun phrase when you give that reason. The central B1 contrast is not a complicated difference between the two phrases; it is the difference between a reason phrase and a result. Because of the delay names the cause, whereas so we moved the launch names the consequence. When reading, mark the reason first and then follow the arrow to the result. If a noun such as delay, workflow, or schedule already follows the gap, because of and due to fit the reason position structurally. If you need to add a complete result clause instead, choose so or therefore. That keeps cause and consequence clearly separate.
05 / 07
How do you use so and therefore for results?
So and therefore introduce a result that follows from the reason already stated. In "The server crashed, so we switched to backup," the first clause names the problem and the second gives the response. Therefore also belongs on the result side of this pattern. Compare that with because of: "We switched to backup because of the crash" names the reason after the action, while "The server crashed, so we switched to backup" moves from reason to consequence. This direction is particularly important for German speakers because German also can also introduce a consequence. English also, however, means too and does not perform that job. Do not say "The server crashed, also we switched to backup." Use so: "The server crashed, so we switched to backup." The short rule is that German also as a result signal becomes English so, not English also.
06 / 07
Which connector mistakes do German speakers make?
German speakers particularly often confuse English also with German also and connect complete sentences around however with only a comma. The first error produces "Also, the meeting is cancelled" when a consequence is intended. The natural sentence is "So the meeting is cancelled." Likewise, "The server crashed, also we switched to backup" becomes "The server crashed, so we switched to backup." The second error is a comma splice: "The client said no, however we sent a revised offer." Separate the two complete statements here with a full stop and write "The client said no. However, we sent a revised offer." You can find both transfer errors with one simple check. Underline every also and ask whether it means too or a result. Circle each however and check whether two complete sentences have been joined by only a comma. Then correct meaning and punctuation separately.
07 / 07
How do you use connectors in reports and emails?
In reports and emails, connectors make the relationship between a decision, its reason, and its result immediately visible. A status report can combine contrast and reason in one sentence: "Although the budget shrank, we delivered on time because of the new workflow." An email can highlight the next action in a new sentence: "The client said no. However, we sent a revised offer." For a clear cause-and-effect chain, write "The server crashed, so we switched to backup." Do not aim to use the maximum number of linking words; give each connection one recognisable job. One sentence can carry a contrast, and the next can name a reason or result. Then read only the connectors and the words immediately after them. After although, expect a subject and verb; after because of or due to, expect a noun phrase; after however here, expect a cleanly separated new sentence. That keeps even a short business message logical and easy to scan.