With any TOEFL iBT course, you expect lessons to prepare you for the reading, listening, speaking, and writing sections of the TOEFL iBT. And, as such you can expect reading, listening, speaking, and writing lessons, right. But is that enough? Probably not.
In addition to these lessons, a TOEFL iBT course should provide vocabulary, pronunciation, and grammar lessons so that you can also improve your basic English proficiency. Why is that?
First of all, you need TOEFL vocabulary lessons to help you develop a knowledge of both basic and advanced vocabulary which will help you when you are completing the reading, listening, speaking, and writing sections of the test. Make sure that your course has audio files of the vocabulary words that you study and that there are quizzes that you can take to demonstrate your mastery of the words you study.
Second of all, since part of your score during the speaking section of the TOEFL is based on delivery or pronunciation, you will need to be able to clearly pronounce the vowel and consonant sounds of American English. Moreover, you will need TOEFL lessons to help you improve your pronunciation as it relates to syllable division and grammatical word endings, word stress, sentence rhythm, intonation, thought groups, and blending.
Finally, how well do you think you can speak and write academic English without having proficiency of basic and advanced grammar? Probably not too well, right? Therefore, make sure you your TOEFL iBT course includes grammar lessons to help you to minimize the errors you make when you are writing or speaking academic English.