Translate the following sentences into Latin : the girls were walking to the forum, the slave carries the master in the garden

The main thing to do when translating sentences is identifying what is the nominative ( subject), the accusative (object) and the verb. In the 1st sentence we can tell the girls, it is also important to remember that it is plural which affects the ending of the word (Puellae rather than Puella). The verb here is walking but it is in the past tense so we must recall the imperfect endings, all of which start with ba . Therefore it is ambulabant from the verb ambulo like ambulance! Now we have our subject and verb we just need the final details (to the forum). Ad(like advance) takes the accusative, luckily forum is neuter and so looks exactly the same as it does in english. In most cases latin verbs come at the end of the sentence therefore our final sentence would be : Puellae ad forum ambulabant.
In the second sentence we have the same plus an accusative (object). Therefore we again must identify the object in this case it is the slave(servus like servant in english), the verb in the present tense- carries (portat like portable), the object in this case is the master as it is the slave who is doing the carrying, the word for master is linked to the word dominate (dominus- in the accusative case dominum) and finally in the garden (in horto) like the first sentence you'll ever learn in latin 'Caecilius est in horto'.
Servus in horto dominum portat.