～て (Reasons and Causes)And・and so, Due to, Because of, Since, Conjunctive

Both of these patterns involve connecting a word or phrase (adjectives and nouns in one case, verbs in the other) to the rest of the sentence using the て form. The meaning of the connection depends on context. Sometimes it simply links words, as in 大きくてきれい ('big and pretty'), while in other cases, the て form expresses reason or method, as in 歩いて行った ('went by walking').

Both forms can express reasons, but their usage differs. Verb[て] + B shows that the stated action is the direct reason for what follows, while し～し implies that multiple reasons exist, even if only one is mentioned. For example, 犯人が捕まって安心です ('I'm relieved because the criminal was caught.') vs. 犯人が捕まったし、安心です ('The criminal was caught, and I'm relieved.'), where the し version suggests there may be other factors for the relief.

Both structures use the て-form to express cause or reason. Verb [て] + B uses the affirmative form to explain a positive reason, e.g. 行けてよかったです ('I'm glad I could go.'). In contrast, なくて is the て-form of the negative ない and expresses a negative reason, e.g. 行けなくて残念でした ('It was unfortunate I couldn't go.').