Ideas based on situations or circumstances can be expressed or taught using Conditional Tense. More often than not Conditional Tense can be used to express some situations which directly deal with past tense and some even with future tense. However, these situations may only use the help of probability.
For expressing present conditional tense based situations or ideas you can always use infinitives for all the three kind of verbs and almost all verbal sentences. Some verbs, having irregularities in the future tense can also use future tense based conditional tense to communicate ideas or suggestions.
